SN74F657

OCTAL TRANSCEIVER WITH PARITY GENERATOR/CHECKER

AND 3-STATE OUTPUTS

SDFS027A – D3217, JANUARY 1989 – REVISED OCTOBER 1993

2–5

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

Any output

VCC = 4.5 V,

IOH = – 3 mA

2.4

3.3

VOH

B1 – B8, PARITY, ERR

VCC = 4.5 V,

IOH = – 15 mA

2

3.1

V

Any output

VCC = 4.75 V,

IOH = – 1 mA to – 3 mA

2.7

V

A1 – A8

V4 5 V

IOL = 24 mA

0.35

0.5

V

VOL

B1 – B8, PARITY, ERR

VCC = 4.5 V

IOL = 64 mA

0.42

0.55

V

T/R

VCC = 0,

VI = 7 V,

OE = 4.5 V

0.1

OE

VCC = 0,

VI = 7 V,

T/R = 4.5 V

0.1

II

ODD/EVEN

VCC = 0,

VI = 7 V

0.1

mA

A1 – A8

VCC =5 5V

VI =7V

2

B1 – B8

VCC = 5.5 V,

VI = 7 V

1

‡

A, B, PARITY

70

IIH‡

T/R, OE

VCC = 5.5 V,

VI = 2.7 V

40

µA

IH

ODD/EVEN

20

‡

A, B, PARITY

–70

IIL‡

T/R, OE

VCC = 5.5 V,

VI = 0.5 V

–40

µA

IL

ODD/EVEN

–20

A1 – A8

VCC =5 5V

VO =0

–60

– 150

mA

IOS§

B1 – B8

VCC = 5.5 V,

VO = 0

– 100

– 225

mA

IOZH

ERR

VCC = 5.5 V,

VI = 2.7 V

50

µA

IOZL

ERR

VCC = 5.5 V,

VI = 0.5 V

–50

µA

ICCH

VCC = 5.5 V

90

125

mA

ICCL

VCC = 5.5 V

106

150

mA

ICCZ

VCC = 5.5 V

98

145

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.