STMicroelectronics ST2349A Datasheet

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ST2349A

4-bit dual supply level translator without direction control pin

Features

■

18 Mbps (max) data rate when driven by a totem pole driver

6.8 Mbps (max) data rate when driven by an open drain pole driver

Bi-directional level translation without direction control pin

Wide V

voltage range of 1.65 to 3.6 V

Wide V

voltage range of 1.80 to 5.5 V

Power down mode feature – when either supply is off, all I/Os are in high impedance

Low quiescent current (max 8 µA)

Able to be driven by totem pole and open drain drivers

5.5 V tolerant enable pin

ESD performance on all pins: ±2 kV HBM

Small package and footprint

QFN16 (2.6 x 1.8 mm) package

Applications

■

Low voltage system level translation

Mobile phones and other mobile devices

C level translation

UART level translation

QFN16

(2.6 x 1.8 mm)

Description

The ST2349A is a 4-bit dual supply level translator which provides the level shifting capability to allow data transfer in a multi-voltage system. Externally applied voltages, V

and V

, set the logic levels on either side of the device. It utilizes transmission gate-based design that allows bi-directional level translation without a control pin.

The ST2349A accepts a V

from 1.65 to 3.6 V and V

from 1.80 to 5.5 V, making it ideal for data transfer between low-voltage ASICs/PLD and higher voltage systems. This device has a tristate output mode which can be used to disable all I/Os.

The ST2349A supports power down mode when

is grounded/floating and the device is disabled via the OE pin.

Table 1.

Device summary

Order code

ST2349AQTR

June 2009

Package

QFN16 (2.6 x 1.8 mm)

Doc ID 14908 Rev 2

Packaging

Tape and reel (3000 parts per reel)

1/20 www.st.com

2/20

Contents

ST2349A

Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1

Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Device block diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Supplementary notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.1

Driver requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.2

Load driving capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.3

Power off feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.4

Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4.1

Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5.1

DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5.2

AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.2.1

5.2.2

Device driven by open drain driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Device driven by totem pole driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Doc ID 14908 Rev 2

ST2349A

Figure 1.

ST2349A pin connection (top through view)

)/6,

I/O

)/6,

)/6##

'.$

)/6##

) /

6##

Pin settings

Table 2.

ST2349A pin description

Pin number Symbol

I/O

VL2

I/O

VL3

I/O

VL4

I/O

VCC4

I/O

VCC3

GND

I/O

VCC2

I/O

VCC1

I/O

VL1

Doc ID 14908 Rev 2

Name and function

Data input/output

Output enable

Data input/output

No connection

Supply voltage

No connection

Data input/output

Ground

Data input/output

Supply voltage

Data input/output

3/20

Device block diagrams

2 Device block diagrams

Figure 2.

ST2349A block diagram

ST2349A

4/20

Figure 3.

Application block diagram

0.1

VL s y s tem controller

VL V L VL VL

I/O

VL1

I/O

VL2

I/O

VL3

I/O

VL4

I/O

VCC1

I/O

VCC2

I/O

VCC3

I/O

VCC4

V CC s y s tem controller

0.1 μF 1 μF

CD0002 3

Doc ID 14908 Rev 2

ST2349A Supplementary notes

3.2

3.3

The ST2349A may be driven by an open drain or totem pole driver and the nature of the device’s output is “open drain”. It must not be used to drive a pull-down resistor since the impedance of the output at HIGH state depends on the pull-up resistor placed at the I/Os.

As the device has pull-up resistors on both the I/O

VCC

and I/O

ports, the user needs to ensure that the driver is able to sink the required amount of current. For example, if the settings are V

= 5.5 V, V

= 4.3 V and the pull-up resistor is 10 k Ω , then the driver must be able to sink at least (5.5 V/10 k Ω ) + (4.3 V/10 k Ω )

1 mA and still meet the V

IL requirements of the ST2349A.

Load driving capability

To support the open drain system, the one-shot transistor is turned on only during high transition at the output side. When it drives a high state, after the one-shot transistor is turned off, only the pull-up resistor is able to maintain the state. In this case, the resistive load is not recommended.

Power off feature

In some applications where it might be required to turn off one of the power supplies powering up the level translator, the user may turn off the V

only when the OE pin is low

(device is disabled). There will be no current consumption in V

due to floating gates or other causes, and the I/Os are in a high-impedance state in this mode.

Table 3.

Truth table

Enable

(1)

High level V

power supply referred

High level V

power supply referred

Z = high impedance

Bi-directional Input/Output

I/O

VCC

(2)

I/O

(1)

L L

(3)

Doc ID 14908 Rev 2 5/20

Maximum rating ST2349A

4.1

Stressing the device above the rating listed in the “Absolute maximum ratings” table may cause permanent damage to the device. These are stress ratings only, and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Table 4.

Symbol

Absolute maximum ratings

Parameter

I/OVL

I/OVCC

I/OVL

I/OVCC

SCTOUT

STG

Supply voltage

DC control input voltage

DC I/O

input voltage (OE = GND or V

)

DC I/O

VCC

input voltage (OE = GND or V

)

DC input diode current

DC output current

Short circuit duration, continuous

Power dissipation

(1)

Storage temperature

Lead temperature (10 seconds)

ESD Electrostatic discharge protection (HBM)

500mW: 65 o

C derated to 300 mW by 10W/ o

C: 65 o

C to 85 o

Value

-0.3 to 4.6

-0.3 to 6.5

-0.3 to V

+ 0.3

-0.3 to V

+ 0.3

-20

±25

±258

500

-65 to 150

300

±2

Unit

V mA mA mA mA mW o

C o

C kV

Recommended operating conditions

Table 5.

Symbol

Recommended operating conditions

Parameter

(1)

VI/O

VCC

T op dt/dV

Supply voltage

Input voltage

(OE output enable pin, V

power supply referred)

I/O

voltage

I/O

VCC

voltage

Operating temperature

Input rise and fall time

must be greater than V

Min

1.65

1.8

-40

Typ Max

3.6

5.5

3.6

Unit

V o

C ns/V

6/20 Doc ID 14908 Rev 2

ST2349A Electrical characteristics

Table 6.

Symbol

IHL

ILL

IHC

ILC

IH-OE

Over recommended operating conditions unless otherwise noted. All typical values are at

= 25 o

DC characteristics

Value

Parameter V

Test conditions -40 to 85 o

C Unit

High level input voltage (I/O

)

1.65

2.0

2.5

to 5.5

3.0

3.6

1.65

Low level input voltage (I/O

)

2.0

2.5

to 5.5

3.0

3.6

1.8

2.5

High level input voltage

(I/O

VCC

)

1.65 to

Low level input voltage

(I/O

VCC

)

3.0

3.6

4.3

5.5

1.65 -

2.5

2.7 -

3.6

1.65

3 - 5.5

3.6 - 5.5

High level input voltage (OE)

2.0

2.5

3.0

3.6

to 5.5

−

1.0

1.2

1.4

1.6

2.0

Min

= 25 o

Typ Max

−

0.3

−

0.4

−

0.5

−

0.6

−

0.8

− −

−

− −

1.4

1.6

2.0

2.4

2.8

−

1.6

2.3

2.7

3.3

3.5

4.2

−

Min

0.3

0.5

1.0

1.2

1.4

1.6

2.0

−

Max

−

0.3

0.4

0.5

0.6

0.8

−

1.4

1.6

2.0

2.4

2.8

−

1.6

2.3

2.7

3.3

3.5

4.2

Doc ID 14908 Rev 2 7/20

Electrical characteristics ST2349A

Table 6.

DC characteristics (continued)

Symbol

IL-OE

OLL

OLC

IO_LKG

QVCC

QVL

Z-VCC

Z-VL

Parameter

Low level input voltage (OE)

1.65

2.0

2.5

Test conditions

to 5.5

−

3.0

3.6

Low level output voltage

(I/O

)

Low level output voltage

(I/O

VCC

)

Control input leakage current

(OE)

1.65 to

3.6

1.65 to

3.6

to 5.5

IO = 1.0 mA

I/O

VCC

≤ 0.15 V

IO = 1.0 mA

I/O

≤ 0.15 V

1.65 to

3.6

to 5.5

= GND or

High impedance leakage current

(I/O

, I/O

VCC

)

1.65 to

3.6

to 5.5 OE = GND

Quiescent supply current

High impedance quiescent supply current

1.65 to

3.6

to 5.5

only pull-up resistor connected to I/O

1.65 to

3.6

1.65 to

3.6

1.65 to

3.6

to 5.5

only pull-up resistor connected to I/O

OE = GND; only pull-up resistor connected to I/O

Value

Min

−

= 25 o

Typ Max

−

0.33

−

0.40

−

0.50

−

0.60

−

0.75

-40 to 85 o

Min

−

Max

0.33

0.40

0.50

0.60

0.75

Unit

− −

0.40

−

0.40

−

0.40

±0.1

6.5

0.01

0.1

6 6.5

0.01

0.1

−

0.40

±0.1

µA

±0.1

µA

8/20 Doc ID 14908 Rev 2

ST2349A Electrical characteristics

Load C

= 15 pF; R up

= 4.7 k Ω ; driver t r

= t f

≤ 2 ns over temperature range -40 °C to 85 °C.

Table 7.

AC characteristics - test conditions: V

= 1.65

−

1.8 V

= 1.8

−

2.5 V V

= 2.7

−

3.6 V

= 4.3

5.5 V

−

Symbol Parameter Unit

Min Max Min Max Min Max t

RVCC t

FVCC t

RVL t

FVL t

I/OVL-VCC t

I/OVCC-VL

Rise time I/O

VCC

Fall time I/O

VCC

Rise time I/O

Fall time I/O

Propagation delay time

I/O

VL-LH to I/O

VCC-LH

I/O

VL-HL to I/O

VCC-HL

Propagation delay time

I/O

VCC-LH to I/O

VL-LH

I/O

VCC-HL to I/O

VL-LH t

PLH t

PHL t

PLH t

PHL

−

23.2

16.4

3.4

13.9

2.0

8.6

−

33.9

17.6

2.0

19.1

2.0

9.0

−

53.3

16.9

2.0

30.2

2.6

9.5

ns ns ns ns ns ns ns ns t

PZL

PZH t

PLZ

PHZ

Output enable and disable time

Data rate

(1)

Dis

−

1.8

−

2.2

−

3.4

ns ns

MHz

The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle deviation not less than 30%.

Table 8.

Symbol t

RVCC t

FVCC t

RVL t

FVL t

I/OVL-VCC t

I/OVCC-VL

AC characteristics - test conditions: V

= 2.5

−

2.7 V

−

3.6 V

Parameter

= 2.7

Min Max

Rise time I/O

VCC

Fall time I/O

VCC

Rise time I/O

Fall time I/O

Propagation delay time

I/O

VL-LH to I/O

VCC-LH

I/O

VL-HL to I/O

VCC-HL

Propagation delay time

I/O

VCC-LH to I/O

VL-LH

I/O

VCC-HL to I/O

VL-LH t

PLH t

PHL t

PLH t

PHL

−

70.0

14.8

50.0

9.8

2.0

8.2

2.0

5.3

= 4.3

−

5.5 V

Max Min

−

19.1

2.0

11.6

2.0

5.9

Unit ns ns ns ns ns ns ns ns

Doc ID 14908 Rev 2 9/20

10/20

Electrical characteristics ST2349A

Table 8.

Symbol

Table 9.

AC characteristics - test conditions: V

= 2.5

−

2.7 V (continued)

= 2.7

−

3.6 V V

= 4.3

−

5.5 V

Parameter

Min Max Min Max

Unit t

PZL

PZH t

PLZ

PHZ

Output enable and disable time

Data rate

(1)

Dis

−

2.2

−

3.0

ns ns

MHz

AC characteristics - test conditions: V

= 2.7

−

3.6 V

= 4.3

−

5.5 V

Symbol Parameter Unit

Min Max t

RVCC t

FVCC t

RVL t

FVL t

I/OVL-VCC t

I/OVCC-VL

Rise time I/O

VCC

Fall time I/O

VCC

Rise time I/O

Fall time I/O

Propagation delay time

I/O

VL-LH to I/O

VCC-LH

I/O

VL-HL to I/O

VCC-HL

Propagation delay time

I/O

VCC-LH to I/O

VL-LH

I/O

VCC-HL to I/O

VL-HL t

PLH t

PHL t

PLH t

PHL

−

55.0

17.2

40.0

9.7

2.0

10.6

2.0

4.8

ns ns ns ns ns ns ns ns t

PZL

PZH t

PLZ

PHZ

Output enable and disable time

Data rate

(1)

Dis

−

3.0

ns ns

MHz

Doc ID 14908 Rev 2

ST2349A Electrical characteristics

Load C

= 15 pF; R up

= 10 k Ω ; driver t r

= t f

≤ 2 ns) over temperature range -40 °C to 85 °C.

Table 10.

AC characteristics - test conditions: V

= 1.65

– 1.8 V

= 1.8 – 2.5 V V

= 2.7 – 3.6 V V

= 4.3 – 5.5 V

Symbol Parameter

Min Max Min Max Min Max t

RVCC t

FVCC t

RVL t

FVL t

I/OVL-

VCC t

I/OVCC-

Rise time I/O

VCC

Fall time I/O

VCC

Rise time I/O

Fall time I/O

Propagation delay time

I/O

VL-LH to I/O

VCC-LH

I/O

VL-HL to I/O

VCC-HL

Propagation delay time

I/O

VCC-LH to I/O

VL-LH

I/O

VCC-HL to I/O

VL-HL t

PLH t

PHL t

PLH t

PHL

−

7.2

23.2

5.9

16.4

5.5

13.9

4.5

8.6

−

4.6

33.9

5.7

17.6

4.1

19.1

3.9

−

1.4

53.3

5.5

16.9

3.6

30.2

3.6

9.5

PZL

PZH t

PLZ

PHZ

Output enable and disable time

Data rate

(1)

Dis

−

6.4

−

4.5

−

Unit ns ns ns ns ns ns ns ns ns ns

MHz

Table 11.

AC characteristics - test conditions: V

= 2.5

– 2.7 V

= 2.7

−

3.6 V

Symbol Parameter

Min Max t

RVCC t

FVCC t

RVL t

FVL t

I/OVL-VCC

Rise time I/O

VCC

Fall time I/O

VCC

Rise time I/O

Fall time I/O

Propagation delay time

I/O

VL-LH to I/O

VCC-LH

I/O

VL-HL to I/O

VCC-HL t

PLH t

PHL

−

3.8

14.8

3.3

9.8

3.2

8.2

= 4.3

−

5.5 V

Max Min

−

2.8

19.1

3.2

10.0

2.8

11.6

Unit ns ns ns ns ns ns

Doc ID 14908 Rev 2 11/20

Electrical characteristics ST2349A

Table 11.

AC characteristics - test conditions: V

= 2.5

– 2.7 V (continued)

= 2.7

−

3.6 V V

= 4.3

−

5.5 V

Symbol Parameter

Min Max Min Max

Unit t

I/OVCC-VL

Propagation delay time

I/O

VCC-LH to I/O

VL-LH

I/O

VCC-HL to I/O

VL-HL t

PLH

−

2.6

−

2.0

ns ns ns t

PHL

−

5.3

−

5.9

ns t

PZL

PZH t

PLZ

PHZ

Output enable and disable time

Data rate

(1)

Dis

−

6.8

ns ns

MHz

Table 12.

AC characteristics - test conditions: V

= 2.7

– 3.6 V

= 4.3

−

5.5 V

Symbol Parameter

Min Max

Unit t

RVCC t

FVCC t

RVL t

FVL t

I/OVL-VCC

Rise time I/O

VCC

Fall time I/O

VCC

Rise time I/O

Fall time I/O

Propagation delay time

I/O

VL-LH to I/O

VCC-LH

I/O

VL-HL to I/O

VCC-HL t

PLH t

PHL

−

2.9

17.2

3.0

9.7

2.7

10.6

ns ns ns ns ns ns t

I/OVCC-VL

Propagation delay time

I/O

VCC-LH to I/O

VL-LH

I/O

VCC-HL to I/O

VL-HL t

PLH

−

1.9

ns ns ns t

PHL

−

4.8

ns t t

PZL

PLZ

PZH

PHZ

Output enable and disable time

Dis

Data rate

(1)

−

40 ns ns

7.2

MHz

12/20 Doc ID 14908 Rev 2

ST2349A Test circuit

Figure 4.

Test circuit

P u l s e gener a tor

R u p

VL VCC

D.U.T

VCC

R u p

V L

VCC

OPEN

GND

C S 14021

Table 13.

Test circuit switches

Test t

PLH

, t

PHL

Driving I/O

Open

Switch

Driving I/O

VCC

Open

Open drain driving

Open

Doc ID 14908 Rev 2 13/20

Test circuit ST2349A

Table 14.

Waveform symbol value

Symbol

1.8 V ≤ V

≤

2.5 V

Driving I/O

≤ 3.3 V ≤ V

5.0 V

≤ V

≤

50% V

+0.15V

-0.15V

50% V

+0.3V

-0.3V

Driving I/O

VCC

1.8 V ≤ V

≤

2.5 V

≤ 3.3V

≤ V

≤

5.0 V

≤

50% V

+0.15V

-0.15V

50% V

+0.3V

-0.3V

Figure 5.

Waveform - propagation delay (f = 1 MHz; 50% duty cycle)

Figure 6.

Waveform - output enable and disable time (f = 1 MHz; 50% duty cycle)

14/20 Doc ID 14908 Rev 2

ST2349A

7 Package mechanical data

Package mechanical data

In order to meet environmental requirements, ST offers these devices in different grades of

ECOPACK

packages, depending on their level of environmental compliance. ECOPACK

® specifications, grade definitions and product status are available at: www.st.com

ECOPACK

is an ST trademark.

Figure 7.

Package outline for QFN16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch

BOTTOM VIEW

Drawing not to scale.

Dimensions are in millimeters.

Doc ID 14908 Rev 2

QFN16L

15/20

Package mechanical data

Table 15.

Mechanical data for QFN16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch

Millimeters

Symbol

ST2349A e 0.40

− −

Figure 8.

Footprint recommentations for QFN16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch

16/20

Drawing not to scale.

Dimensions are in millimeters.

Doc ID 14908 Rev 2

7874009

ST2349A Package mechanical data

Figure 9.

Carrier tape for QFN16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch

7 8 597 8 -J

Doc ID 14908 Rev 2 17/20

Package mechanical data

Figure 10.

Reel information for QFN16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch

ST2349A

Drawing not to scale.

Dimensions are in millimeters

18/20 Doc ID 14908 Rev 2

7 8 7597 8

ST2349A Revision history

Table 16.

Document revision history

Date

16-Jul-2008

22-Jun-2009

Revision

Changes

Initial release.

Document status promoted from Preliminary data to datasheet.

Content reworked to improve readability.

Updated:

Table 7 on page 9 , Table 8 on page 9 ,

Table 9 on page 10 ,

Table 10 on page 11

Table 11 on page 11

and Table 12 on page 12

Modified: ECOPACK information.

Doc ID 14908 Rev 2 19/20

ST2349A

Please Read Carefully:

Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice.

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