CLK(I)

R

Q

C

C

D

C

C

C

C

C

C

TG

C

C

TG

TG

TG

CLK

1D

1Q

2D

2Q

3D

3Q

4D

4Q

5D

5Q

6D

6Q

7D

7Q

8D

8Q

CLR

1D

R

C1

1D

R

C1

1D

R

C1

1D

R

C1

1D

R

C1

1D

R

C1

1D

R

C1

1D

R

C1

3

4

7

8

13

14

17

18

2

5

6

9

12

15

16

19

11

1

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

SN54AHC273, SN74AHC273

SCLS376I – JUNE 1997 – REVISED MARCH 2015

SNx4AHC273 Octal D-Type Flip-Flops With Clear

1 Features

3 Description

These devices are positive-edge-triggered D-type

1

•

flip-flops with a direct clear (CLR) input.

•

Contain Eight Flip-Flops With Single-Rail Outputs

Information at the data (D) inputs meeting the setup

•

Direct Clear Input

time requirements is transferred to the Q outputs on

•

Individual Data Input to Each Flip-Flop

the positive-going edge of the clock (CLK) pulse.

•

Latch-Up Performance Exceeds 250 mA Per

Clock triggering occurs at a particular voltage level

JESD 17

and is not directly related to the transition time of the

positive-going pulse. When CLK is at either the high

•

ESD Protection Exceeds JESD 22

or low level, the D input has no effect at the output.

–

2000-V Human-Body Model (A114-A)

–

1000-V Charged-Device Model (C101)

Device Information(1)

•

On Products Compliant to MIL-PRF-38535,

PART NUMBER

PACKAGE

BODY SIZE (NOM)

All Parameters Are Tested Unless Otherwise

PDIP (20)

24.33 mm × 6.35 mm

Noted. On All Other Products, Production

SSOP (20)

7.20 mm × 5.30 mm

Processing Does Not Necessarily Include Testing

SNx4AHC273

TSSOP (20)

6.50 mm × 4.40 mm

of All Parameters.

TVSOP (20)

5.00 mm × 4.40 mm

SOIC (20)

12.80 mm × 7.50 mm

2 Applications

(1) For all available packages, see the orderable addendum at

•

Buffers and Storage Registers

the end of the data sheet.

•

Shift Registers

•

Pattern Generators

•

Servers

•

PCs and Notebooks

•

Network Switches

•

Memory Systems

•

Databases

4 Simplified Schematics

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.