SN74ACT3631

512

× 36

CLOCKED FIRST-IN, FIRST-OUT MEMORY

SCAS246G – AUGUST 1993 – REVISED APRIL 1998

21

POST OFFICE BOX 655303

– 0.5 V to 7 V

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

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

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

±20 mA

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

±50 mA

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

±50 mA

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

±400 mA

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

Package thermal impedance,

28

°C/W

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

PQ package

46

°C/W

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

–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.

NOTES:

1. The input and output voltage ratings can be exceeded provided the input and output current ratings are observed.

2. The package thermal impedance is calculated in accordance with JESD 51.

recommended operating conditions

MIN

MAX

UNIT

VCC

Supply voltage

4.5

5.5

V

VIH

High-level input voltage

2

V

VIL

Low-level input voltage

0.8

V

IOH

High-level output current

–4

mA

IOL

Low-level output current

8

mA

TA

Operating free-air temperature

0

70

°C

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

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP‡

MAX

UNIT

VOH

VCC = 4.5 V,

IOH = – 4 mA

2.4

V

VOL

VCC = 4.5 V,

IOL = 8 mA

0.5

V

II

VCC = 5.5 V,

VI = VCC or 0

±5

µA

IOZ

VCC = 5.5 V,

VO = VCC or 0

±5

µA

ICC

VCC = 5.5 V,

VI = VCC – 0.2 V or 0

400

µA

§

CSA = VIH

A0 – A35

0

§

V5 5 V O

i

t t 3 4 V

CSB = VIH

B0 – B35

0

∆ICC§

VCC = 5.5 V, One input at 3.4 V,

Other inputs at VCC or GND

CSA = VIL

A0 – A35

1

mA

Other in uts at VCC or GND

CSB = VIL

B0 – B35

1

All other inputs

1

Ci

VI = 0,

f = 1 MHz

4

pF

Co

VO = 0,

f = 1 MHz

8

pF

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

§ This is the supply current when each input is at one of the specified TTL voltage levels rather than 0 V or VCC.