6.42

IDT70914S

High-Speed 36K (4K x 9) Synchronous Dual-Port Static RAM

Military, Industrial and Commercial Temperature Ranges

2

,

3490 drw 03

10

11

12

13

14

15

16

50

49

48

47

46

45

44

INDEX

17

18

19

20

21

22

23

24

25

26

51

52

53

54

55

56

57

58

59

60

98

7

6

54

3

2

1

68 67 66 65 64 63 62 61

27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43

R/

N/C

N/C

GND

GND

GND

R/

N/C

N/C

GND

IDT70914J

68-Pin PLCC

N/C

N/C

Description

TheIDT70914isahigh-speed4Kx9bitsynchronousDual-PortRAM.

The memory array is based on Dual-Port memory cells to allow

simultaneous access from both ports. Registers on control, data, and

address inputs provide low set-up and hold times. The timing latitude

provided by this approach allow systems to be designed with very short

cycletimes.Withaninputdataregister,thisdevicehasbeenoptimizedfor

applications having unidirectional data flow or bi-directional data flow in

bursts.

The IDT70914 utilizes a 9-bit wide data path to allow for parity at the

user's option. This feature is especially useful in data communication

applications where it is necessary to use a parity bit for transmission/

reception error checking.

Fabricated using IDT’s CMOS high-performance technology, these

Dual-Ports typically operate on only 850mW of power at maximum high-

speed clock-to-data output times as fast as 12ns. An automatic power

down feature, controlled by

CE,permitstheon-chipcircuitryofeachport

to enter a very low standby power mode.

The IDT70914 is packaged in a 68-pin PLCC, and an 80-pin TQFP.

Militarygradeproductismanufacturedincompliancewiththelatestrevision

of MIL-PRF-38535 QML, making it ideally suited for military temperature

applications demanding the highest level of performance and reliability.

NOTES:

2. All ground pins must be connected to ground supply.

3. J68-1 package body is approximately .95 in x .95 in x .17 in.

4. This package code is used to reference the package diagram.

5. This text does not indicate orientation of the actual part-marking.