SN74ALS235

64 × 5 ASYNCHRONOUS FIRST IN, FIRST OUT MEMORY

SDAS108A − OCTOBER 1986 − REVISED SEPTEMBER 1993

9

POST OFFICE BOX 655303

POST OFFICE BOX 1443

7 V

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

7 V

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

Voltage applied to a disabled 3-state output

5.5 V

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

0

°C to 70°

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

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: All voltage values are with respect to GND.

recommended operating conditions

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

IOH

High-level output current

Q outputs

− 2.6

mA

IOH

High-level output current

Flags

− 0.4

mA

IOL

Low-level output current

Q outputs

24

mA

IOL

Low-level output current

Flags

8

mA

fclock

Clock frequency

SI or SO

0

25

MHz

tw

Pulse duration

SI or SO

High or low

15

ns

tw

Pulse duration

RST

Low

15

ns

tsu

Setup time before SI

↑

Data

0

ns

tsu

Setup time before SI

↑

RST

High (inactive)

15

ns

th

Hold time, data after SI

↑

17

ns

TA

Operating free-air temperature

0

70

°C