Philips Semiconductors

Product specification

MB2374

16-bit D-type flip-flop; positive-edge trigger (3-State)

2

1993 Aug 23

853–1625 10583

FEATURES

and 200V per Machine Model

DESCRIPTION

The MB2374 high-performance BiCMOS device combines low

static and dynamic power dissipation with high speed and high

output drive.

The MB2374 has two 8-bit, edge triggered registers, with each

register coupled to eight 3-State output buffers. The two sections of

each register are controlled independently by the clock (nCP) and

Output Enable (nOE) control gates.

Each register is fully edge triggered. The state of each D input, one

set-up time before the Low-to-High clock transition, is transferred to

the corresponding flip-flop’s Q output.

The 3-State output buffers are designed to drive heavily loaded

3-State buses, MOS memories, or MOS microprocessors. Each

active-Low Output Enable (nOE) controls all eight 3-State buffers for

its register independent of the clock operation.

When nOE is Low, the stored data appears at the outputs for that

register. When nOE is High, the outputs for that register are in the

High-impedance “OFF” state, which means they will neither drive

nor load the bus.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

TYPICAL

UNIT

Propagation delay

nCP to nQx

3.4

3.6

ns

Input capacitance

4

pF

Output capacitance

7

pF

Total supply current

120

µA

ORDERING INFORMATION

PACKAGES

TEMPERATURE RANGE

OUTSIDE NORTH AMERICA

NORTH AMERICA

DWG NUMBER

52–pin plastic Quad Flat Pack

–40

°C to +85°C

MB2374 BB

MB2374 BB

SOT379-1

PIN CONFIGURATION

52

1Q7

2Q1

GND

GND

GND

1Q5

2Q3

VCC

2Q2

1Q4

2Q0

1Q6

VCC

1

2

3

4

5

6

7

8

9

10

11

12

13

1D7

2D1

GND

GND

GND

1D5

2D3

VCC

2D2

1D4

2D0

1D6

VCC

39

38

37

36

35

34

33

32

31

30

29

28

27

19

22

20

23

17

16

25

26

24

15

14

21

18

47

44

46

43

49

50

41 40

42

51

45

48

52-pin PQFP

SB00062

PIN DESCRIPTION

PIN NUMBER

SYMBOL

FUNCTION

44, 43, 41, 40,

38, 37, 35, 34,

32, 31, 29, 28,

26, 25, 23, 22

1D0 – 1D7

2D0 – 2D7

Data inputs

48, 49, 51, 52,

2, 3, 5, 6,

8, 9, 11, 12,

14, 15, 17, 18

1Q0 – 1Q7

2Q0 – 2Q7

Data outputs

47, 19

1OE, 2OE

Output enable inputs

(active-Low)

45, 21

1CP, 2CP

Clock pulse inputs

(active rising edge)

4, 7, 10, 16, 20, 24,

30, 33, 36, 42, 46, 50

GND

Ground (0V)

1, 13, 27, 39

Positive supply voltage