SN54AHCT273, SN74AHCT273

OCTAL D-TYPE FLIP-FLOPS

WITH CLEAR

SCLS375E – JUNE 1997 – REVISED APRIL 2002

1

POST OFFICE BOX 655303

Outputs

– Buffer/Storage Registers

– Shift Registers

– Pattern Generators

JESD 17

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

– 1000-V Charged-Device Model (C101)

description

These devices are positive-edge-triggered D-type

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

Information at the data (D) inputs meeting the

setup time requirements is transferred to the

Q outputs on the positive-going edge of the clock

(CLK) pulse. Clock triggering occurs at a

particular voltage level and is not directly related

to the transition time of the positive-going pulse.

When CLK is at either the high or low level, the

D input has no effect at the output.

ORDERING INFORMATION

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP – N

Tube

SN74AHCT273N

SN74AHCT273N

SOIC

DW

Tube

SN74AHCT273DW

AHCT273

SOIC – DW

Tape and reel

SN74AHCT273DWR

AHCT273

–40

°C to 85°C

SOP – NS

Tape and reel

SN74AHCT273NSR

AHCT273

SSOP – DB

Tape and reel

SN74AHCT273DBR

HB273

TSSOP – PW

Tape and reel

SN74AHCT273PWR

HB273

TVSOP – DGV

Tape and reel

SN74AHCT273DGVR

HB273

CDIP – J

Tube

SNJ54AHCT273J

SNJ54AHCT273J

–55

°C to 125°C

CFP – W

Tube

SNJ54AHCT273W

SNJ54AHCT273W

LCCC – FK

Tube

SNJ54AHCT273FK

SNJ54AHCT273FK

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines

are available at www.ti.com/sc/package.

Copyright

 2002, Texas Instruments Incorporated

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information current as of publication date. Products conform to

specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all

parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

SN54AHCT273 ...J OR W PACKAGE

SN74AHCT273 . . . DB, DGV, DW, N, NS, OR PW PACKAGE

(TOP VIEW)

SN54AHCT273 . . . FK PACKAGE

(TOP VIEW)

3

2

1 20 19

9 10 11 12 13

4

5

6

7

8

18

17

16

15

14

2D

2Q

3Q

3D

4D

8D

7D

7Q

6Q

6D

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

CLR

1Q

1D

2D

2Q

3Q

3D

4D

4Q

GND

8Q

8D

7D

7Q

6Q

6D

5D

5Q

CLK