SN74ABT543A

OCTAL REGISTERED TRANSCEIVER

WITH 3-STATE OUTPUTS

SCBS464A – JUNE 1992 – REVISED JUNE 1994

4

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

TA = 25°C

MIN

MAX

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

MIN

MAX

UNIT

VIK

VCC = 4.5 V,

II = – 18 mA

–1.2

–1.2

V

VCC = 4.5 V,

IOH = – 3 mA

2.5

2.5

VOH

VCC = 5 V,

IOH = – 3 mA

3

3

V

VOH

VCC =4 5V

IOH = –24 mA

2

V

VCC = 4.5 V

IOH = – 32 mA

2

VOL

VCC =4 5V

IOL = 48 mA

0.55

V

VOL

VCC = 4.5 V

IOL = 64 mA

0.55

V

II

VCC =5 5V

VI =VCC or GND

Control inputs

±1

±1

µA

II

VCC = 5.5 V,

VI = VCC or GND

A or B ports

±100

±100

µA

IOZH‡

VCC = 5.5 V,

VO = 2.7 V

50

50

µA

IOZL‡

VCC = 5.5 V,

VO = 0.5 V

–50

–50

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

µA

IO§

VCC = 5.5 V,

VO = 2.5 V

–50

–100

–180

–50

–180

mA

VCC = 5.5 V,

Outputs high

1

250

250

µA

ICC

VCC 5.5 V,

IO = 0,

A or B ports

Outputs low

24

34

34

mA

VI = VCC or GND

Outputs disabled

0.5

250

250

µA

∆ICC¶

VCC = 5.5 V,

One input at 3.4 V,

Other inputs at VCC or GND

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

† All typical values are at VCC = 5 V.

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

§ 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.

timing requirements over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted)

VCC = 5 V,

TA = 25°C

MIN

MAX

UNIT

MIN

MAX

tw

Pulse duration, LEAB or LEBA low

3.5

3.5

ns

Data before LEAB or LEBA

↑

High

2.5

2.5

t

Setup time

Data before LEAB or LEBA

↑

Low

3

3

ns

tsu

Setup time

Data before CEAB or CEBA

↑

High

2.5

2.5

ns

Data before CEAB or CEBA

↑

Low

2.5

2.5

th

Hold time

Data after LEAB or LEBA

↑

1

1

ns

th

Hold time

Data after CEAB or CEBA

↑

1

1

ns