SN54ABT273_08 Datasheet, PDF (1/18 Pages) Texas Instruments – OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR

SN54ABT273, SN74ABT273
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH CLEAR
SCBS185B – FEBRUARY 1991 – REVISED JANUARY 1997
D State-of-the-Art EPIC-ΙΙB™ BiCMOS Design
Significantly Reduces Power Dissipation
D Latch-Up Performance Exceeds 500 mA Per
JEDEC Standard JESD-17
D Typical V_OLP (Output Ground Bounce) < 1 V
at V_CC = 5 V, T_A = 25°C
D High-Drive Outputs (–32-mA I_OH, 64-mA I_OL)
D Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages, Ceramic Chip Carriers (FK),
Plastic (N) and Ceramic (J) DIPs, and
Ceramic Flat (W) Package
SN54ABT273 . . . J OR W PACKAGE
SN74ABT273 . . . DB, DW, N, OR PW PACKAGE
(TOP VIEW)
CLR ₁
1Q ₂
1D 3
2D 4
2Q 5
3Q 6
3D 7
4D 8
4Q 9
GND 10
20 ^V_CC
19 ^8Q
18 8D
17 7D
16 7Q
15 6Q
14 6D
13 5D
12 5Q
11 CLK
description
The ’ABT273 are 8-bit positive-edge-triggered
D-type flip-flops with a direct clear (CLR) input.
They are particularly suitable for implementing
buffer and storage registers, shift registers, and
pattern generators.
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
pulse. Clock triggering occurs at a particular
voltage level and is not directly related to the
transition time of the positive-going pulse. When
the clock (CLK) input is at either the high or low
level, the D input signal has no effect at the output.
SN54ABT273 . . . FK PACKAGE
(TOP VIEW)
2D
3 2 1 20 19
4
18
8D
2Q ₅
17 7D
3Q 6
16 7Q
3D 7
15 6Q
4D 8
14 6D
9 10 11 12 13
The SN54ABT273 is characterized for operation over the full military temperature range of –55°C to 125°C. The
SN74ABT273 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each flip-flop)
INPUTS
CLR CLK D
OUTPUT
Q
L
X
X
L
H
↑
H
H
H
↑
L
L
H H or L X
Q0
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.
EPIC-ΙΙB is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is 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.
Copyright © 1997, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1