Texas Instruments SN74LVTH244ADBLE, SN74LVTH244ADBR, SN74LVTH244ADW, SN74LVTH244ADWR, SN74LVTH244APWLE Datasheet

SN54LVTH244A, SN74LVTH244A

3.3-V ABT OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS

SCAS586E – DECEMBER 1996 – REVISED APRIL 1999

D

State-of-the-Art Advanced BiCMOS
Technology (ABT) Design for 3.3-V
Operation and Low Static-Power
Dissipation

D

Support Mixed-Mode Signal Operation (5-V
Input and Output Voltages With 3.3-V V

D

Support Unregulated Battery Operation
Down to 2.7 V

D

Typical V
< 0.8 V at V

D

I

off

and Power-Up 3-State Support Hot

(Output Ground Bounce)

OLP

= 3.3 V, TA = 25°C

CC

Insertion

D

Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors

D

Latch-Up Performance Exceeds 500 mA Per
JESD 17

D

ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)

D

Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages, Ceramic Chip Carriers (FK),
Ceramic Flat (W) Packages, and Ceramic
(J) DIPs

description

CC

SN54LVTH244A...J OR W PACKAGE

SN74LVTH244A. . . DB, DW, OR PW PACKAGE

)

SN54LVTH244A. . . FK PACKAGE

1A2
2Y3
1A3
2Y2
1A4

(TOP VIEW)

1OE

1

1A1

2

2Y4

3

1A2

4

2Y3

5

1A3

6

2Y2

7

1A4

8
9

2Y1

GND

10

(TOP VIEW)

2Y4

3212019

4
5
6
7
8

910111213

2Y1

1A1

GND

20
19
18
17
16
15
14
13
12
11

1OE

V

2A1

CC

1Y4

V

CC

2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1

18
17
16
15
14

2A2 2OE

1Y1
2A4
1Y2
2A3
1Y3

These octal buffers and line drivers are designed specifically for low-voltage (3.3-V) VCC operation, but with the
capability to provide a TTL interface to a 5-V system environment.

The ’L VTH244A devices are organized as two 4-bit line drivers with separate output-enable (OE
OE

is low, the devices pass data from the A inputs to the Y outputs. When OE is high, the outputs are in the

) inputs. When

high-impedance state.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
When V

However, to ensure the high-impedance state above 1.5 V, OE

is between 0 and 1.5 V , the devices are in the high-impedance state during power up or power down.

CC

should be tied to VCC through a pullup resistor;

the minimum value of the resistor is determined by the current-sinking capability of the driver.
These devices are fully specified for hot-insertion applications using I

and power-up 3-state. The I

off

disables the outputs, preventing damaging current backflow through the devices when they are powered down.
The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down,
which prevents driver conflict.

The SN54L VTH244A is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74LVTH244A is characterized for operation from –40°C to 85°C.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

Copyright  1999, Texas Instruments Incorporated

On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.

circuitry

off

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

1

SN54LVTH244A, SN74LVTH244A

3.3-V ABT OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS

SCAS586E – DECEMBER 1996 – REVISED APRIL 1999

FUNCTION TABLE

(each buffer)

INPUTS

OE A

L H H
L LL

HXZ

OUTPUT

Y

logic symbol

1OE 2OE

1A1
1A2
1A3
1A4

†

This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

†

1

2
4
6
8

EN

18
16
14
12

1Y1
1Y2
1Y3
1Y4

2A1
2A2
2A3
2A4

logic diagram (positive logic)

1

1OE

218

1A1

416

1A2

1Y1

1Y2

2OE

2A1

2A2

19

11
13
15
17

19

11 9

13 7

EN

2Y1

2Y2

9

2Y1

7

2Y2

5

2Y3

3

2Y4

614

1A3

812

1A4

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

1Y3

1Y4

15 5

2A3

17 3

2A4

2Y3

2Y4

UNIT

SN54LVTH244A, SN74LVTH244A

3.3-V ABT OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS

SCAS586E – DECEMBER 1996 – REVISED APRIL 1999

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage range, V
Input voltage range, V

–0.5 V to 4.6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

(see Note 1) –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I

†

Voltage range applied to any output in the high-impedance

or power-off state, V
Voltage range applied to any output in the high state, V
Current into any output in the low state, I

(see Note 1) –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

O

: SN54LVTH244A 96 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

O

(see Note 1) –0.5 V to V

O

CC

+ 0.5 V. . . . . . . . . . . . .

SN74LVTH244A 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Current into any output in the high state, I

(see Note 2): SN54LVTH244A 48 mA. . . . . . . . . . . . . . . . . . . . . .

O

SN74LVTH244A 64 mA. . . . . . . . . . . . . . . . . . . . . .

Input clamp current, I
Output clamp current, I
Package thermal impedance, θ

(V

< 0) –50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IK

I

(V

< 0) –50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OK

O

(see Note 3): DB package 115°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

JA

DW package 97°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PW package 128°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, T

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.

2. This current flows only when the output is in the high state and VO > VCC.

3. The package thermal impedance is calculated in accordance with JESD 51.

–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

stg

recommended operating conditions (see Note 4)

SN54LVTH244A SN74LVTH244A

MIN MAX MIN MAX

V

CC

V

IH

V

IL

V

I

I

OH

I

OL

∆t/∆v Input transition rise or fall rate Outputs enabled 10 10 ns/V
∆t/∆V

T

A

NOTE 4: All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,

Supply voltage 2.7 3.6 2.7 3.6 V
High-level input voltage 2 2 V
Low-level input voltage 0.8 0.8 V
Input voltage 5.5 5.5 V
High-level output current –24 –32 mA
Low-level output current 48 64 mA

Power-up ramp rate 200 200 µs/V

CC

Operating free-air temperature –55 125 –40 85 °C

Implications of Slow or Floating CMOS Inputs

, literature number SCBA004.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

3