1

Data sheet acquired from Harris Semiconductor

SCHS184C

Features

• Buffered Common Clock

• Buffered Inputs

• Typical Propagation Delay at CL = 15pF,

VCC = 5V, TA = 25

oC

- 14 ns (HC Types

- 16 ns (HCT Types)

• Fanout (Over Temperature Range)

- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

• Wide Operating Temperature Range . . . -55oC to 125oC

• Balanced Propagation Delay and Transition Times

• Significant Power Reduction Compared to LSTTL

Logic ICs

• HC Types

- 2V to 6V Operation

- High Noise Immunity: NIL = 30%, NIH = 30%of VCC at

VCC = 5V

• HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

VIL= 0.8V (Max), VIH = 2V (Min)

- CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH

Description

The ’HC377 and ’HCT377 are octal D-type flip-flops with a

buffered clock (CP) common to all eight flip-flops. All the flip-

flops are loaded simultaneously on the positive edge of the

clock (CP) when the Data Enable (E) is Low.

Pinout

CD54HC377, CD54HCT377

(CERDIP)

CD74HC377

(PDIP, SOIC, TSSOP)

CD74HCT377

(PDIP, SOIC)

TOP VIEW

Ordering Information

PART NUMBER

TEMP. RANGE

(oC)

PACKAGE

CD54HC377F3A

-55 to 125

20 Ld CERDIP

CD54HCT377F3A

-55 to 125

20 Ld CERDIP

CD74HC377E

-55 to 125

20 Ld PDIP

CD74HC377M

-55 to 125

20 Ld SOIC

CD74HC377M96

-55 to 125

20 Ld SOIC

CD74HC377PW

-55 to 125

20 Ld TSSOP

CD74HC377PWR

-55 to 125

20 Ld TSSOP

CD74HCT377E

-55 to 125

20 Ld PDIP

CD74HCT377M

-55 to 125

20 Ld SOIC

CD74HCT377M96

-55 to 125

20 Ld SOIC

NOTE: When ordering, use the entire part number. The suffixes

96 and R denote tape and reel.

11

12

13

14

15

16

17

18

20

19

10

9

8

7

6

5

4

3

2

1

E

Q0

D0

D1

Q1

Q2

D3

D2

Q3

GND

VCC

D7

D6

Q6

Q7

Q5

D5

D4

Q4

CP

September 1997 - Revised February 2004

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

Copyright

© 2004, Texas Instruments Incorporated

CD54HC377, CD74HC377,

CD54HCT377, CD74HCT377

High-Speed CMOS Logic

Octal D-Type Flip-Flop With Data Enable

[ /Title

(CD74

HC377

,

CD74

HCT37

7)

/Sub-

ject

(High

Speed

CMOS

Logic

Octal

D-

Type

Flip-