SN74F543

OCTAL REGISTERED TRANSCEIVER

WITH 3-STATE OUTPUTS

SDFS025B – D2942, MARCH 1987 – REVISED OCTOBER 1993

2–4

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = – 18 mA

– 1.2

V

A1 A8

IOH = – 1 mA

2.5

3.4

A1 – A8

VCC =4 5V

IOH = – 3 mA

2.4

3.3

VOH

B1 B8

VCC = 4.5 V

IOH = – 3 mA

2.4

3.3

V

B1 – B8

IOH = – 15 mA

2

3.1

Any output

VCC = 4.75 V,

IOH = – 1 mA to – 3 mA

2.7

VOL

A1 – A8

VCC =4 5V

IOL = 24 mA

0.3

0.5

V

VOL

B1 – B8

VCC = 4.5 V

IOL = 64 mA

0.42

0.55

V

II

OE, LE, and CE

VCC =5 5V

VI = 7 V

0.1

mA

II

A and B ports

VCC = 5.5 V

VI = 5.5 V

1

mA

I

‡

OE, LE, and CE

VCC =5 5V

VI =2 7V

20

µA

IIH‡

A and B ports

VCC = 5.5 V,

VI = 2.7 V

70

µA

I ‡

OE, LE, and CE

VCC =5 5V

VI =0 5V

– 1.2

mA

IIL‡

A and B ports

VCC = 5.5 V,

VI = 0.5 V

– 0.65

mA

I

§

A1 – A8

VCC =5 5V

VO =0

–60

– 150

mA

IOS§

B1 – B8

VCC = 5.5 V,

VO = 0

– 100

– 225

mA

ICCH

VCC = 5.5 V

67

100

mA

ICCL

VCC = 5.5 V

83

125

mA

ICCZ

VCC = 5.5 V

83

125

mA

† All typical values are at VCC = 5 V, TA = 25°C.

‡ For I/O ports, the parameters IIH and IIL include the off-state output current.

§ Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.

timing requirements

VCC = 5 V,

TA = 25°C

VCC = 4.5 V to 5.5 V,

TA = MIN to MAX¶

UNIT

MIN

MAX

MIN

MAX

tw

Pulse duration

5

5

ns

tsu

Setup time, data before latch enable

High or low

3

3.5

ns

th

Hold time, data after latch enable

High or low

3

3.5

ns

¶ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.