SN64BCT657

OCTAL TRANSCEIVER WITH PARITY GENERATOR/CHECKER

AND 3STATE OUTPUTS

SCBS090A − NOVEMBER 1991 − REVISED JANUARY 1994

3−4

POST OFFICE BOX 655303

POST OFFICE BOX 1443

−0.5 V to 7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−0.5 V to 7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−0.5 V to 5.5 V

. . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−30 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

60 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air temperature range

−40

°C to 85°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range

−65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† 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.

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

recommended operating conditions (see Note 2)

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

5.5

V

VIH

High-level input voltage

2

V

VIL

Low-level input voltage

0.8

V

IIK

Input clamp current

−18

mA

IOH

High-level output current

A port

−3

mA

IOH

High-level output current

B port, PARITY, ERR

−15

mA

IOL

Low-level output current

A port

24

mA

IOL

Low-level output current

B port, PARITY, ERR

64

mA

∆t/∆VCC

Power-up ramp rate

2

µs/V

TA

Operating free-air temperature

−40

85

°C

NOTE 2: Unused or floating pins (input or I/O) must be held high or low.