SN74ACT7882

2048

× 18

CLOCKED FIRST-IN, FIRST-OUT MEMORY

SCAS445C – JUNE 1994 – REVISED APRIL 1998

2

POST OFFICE BOX 655303

PN PACKAGE

(TOP VIEW)

22 23

NC

Q3

Q2

GND

Q1

Q0

HF

IR

GND

GND

AF/AE

WRTEN2

WRTEN1

WRTCLK

GND

NC

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

24

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

NC

GND

GND

Q16

Q17

OR

GND

RESET

OE

RDEN2

RDEN1

RDCLK

GND

D17

D16

D15

NC

NC

25 26 27 28

79 78 77 76 75

80

74

72 71 70

73

29 30 31 32 33

69 68

21

67 66 65 64

34 35 36 37 38 39 40

63 62 61

NC – No internal connection

description

A FIFO memory is a storage device that allows data to be written into and read from its array at independent

data rates. The SN74ACT7882 is organized as 2048 bits deep

× 18 bits wide. The SN74ACT7882 processes

data at rates up to 67 MHz and access times of 11 ns in a bit-parallel format. Data outputs are noninverting with

respect to the data inputs. Expansion is accomplished easily in both word width and word depth.

The SN74ACT7882 has normal input-bus to output-bus asynchronous operation. The special enable circuitry

adds the ability to synchronize independent reads and writes to their respective system clocks.

The SN74ACT7882 is characterized for operation from 0

°C to 70°C.