SN54ABT543, SN74ABT543

OCTAL REGISTERED TRANSCEIVERS

WITH 3STATE OUTPUTS

SCBS157A − JANUARY 1991 − REVISED JULY 1994

2−4

POST OFFICE BOX 655303

POST OFFICE BOX 1443

recommended operating conditions (see Note 3)

SN54ABT543

SN74ABT543

UNIT

MIN

MAX

MIN

MAX

UNIT

VCC

Supply voltage

4.5

5.5

4.5

5.5

V

VIH

High-level input voltage

2

2

V

VIL

Low-level input voltage

0.8

0.8

V

VI

Input voltage

0

VCC

0

VCC

V

IOH

High-level output current

−24

−32

mA

IOL

Low-level output current

48

64

mA

∆t/∆v

Input transition rise or fall rate

Outputs enabled

5

5

ns / V

TA

Operating free-air temperature

−55

125

−40

85

°C

NOTE 3: Unused or floating pins (input or I/O) must be held high or low.

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

TA = 25°C

SN54ABT543

SN74ABT543

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

MIN

MAX

MIN

MAX

UNIT

VIK

VCC = 4.5 V,

II = − 18 mA

−1.2

−1.2

−1.2

V

VCC = 4.5 V,

IOH = − 3 mA

2.5

2.5

2.5

VOH

VCC = 5 V,

IOH = − 3 mA

3

3

3

V

VOH

VCC = 4.5 V

IOH = −24 mA

2

2

V

VCC = 4.5 V

IOH = − 32 mA

2*

2

VOL

VCC = 4.5 V

IOL = 48 mA

0.55

0.55

V

VOL

VCC = 4.5 V

IOL = 64 mA

0.55*

0.55

V

II

VCC = 5.5 V,

Control inputs

±1

±1

±1

A

II

VCC = 5.5 V,

VI = VCC or GND

A or B ports

±100

±100

±100

µA

IOZH‡

VCC = 5.5 V,

VO = 2.7 V

10§

10§

10§

µA

IOZL‡

VCC = 5.5 V,

VO = 0.5 V

−10§

−10§

−10§

µA

Ioff

VCC = 0,

VI or VO ≤ 4.5 V

±100

±100

µA

ICEX

VCC = 5.5 V,

VO = 5.5 V

Outputs high

50

50

50

µA

IO¶

VCC = 5.5 V,

VO = 2.5 V

−50

−100

−180

−50

−180

−50

−180

mA

VCC = 5.5 V,

Outputs high

1

250

250

250

µA

ICC

VCC = 5.5 V,

IO = 0,

A or B ports

Outputs low

24

34§

34§

34§

mA

IO = 0,

VI = VCC or GND

Outputs disabled

0.5

250

250

250

µA

∆ICC#

VCC = 5.5 V,

One input at 3.4 V,

Other inputs at VCC or GND

1.5

1.5

1.5

mA

Ci

VI = 2.5 V or 0.5 V

Control inputs

4

pF

Cio

VO = 2.5 V or 0.5 V

A or B ports

7

pF

* On products compliant to MIL-STD-883, Class B, this parameter does not apply.

† All typical values are at VCC = 5 V.

‡ The parameters IOZH and IOZL include the input leakage current.

§ This data sheet limit may vary among suppliers.

¶ Not more than one output should be tested at a time, and the duration of the test should not exceed one second.

# This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.