鈩?/div>
BiCMOS Design
Significantly Reduces Power Dissipation
Latch-Up Performance Exceeds 500 mA Per
JEDEC Standard JESD-17
Typical V
OLP
(Output Ground Bounce) < 1 V
at V
CC
= 5 V, T
A
= 25擄C
High-Drive Outputs (鈥?2-mA I
OH
, 64-mA I
OL
)
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
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLK
description
The 鈥橝BT273 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)
1D
1Q
CLR
V
CC
2D
2Q
3Q
3D
4D
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
8Q
8D
7D
7Q
6Q
6D
The SN54ABT273 is characterized for operation over the full military temperature range of 鈥?5擄C to 125擄C. The
SN74ABT273 is characterized for operation from 鈥?0擄C to 85擄C.
FUNCTION TABLE
(each flip-flop)
INPUTS
CLR
L
H
H
H
CLK
X
鈫?/div>
鈫?/div>
H or L
D
X
H
L
X
OUTPUT
Q
L
H
L
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-螜螜B 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
漏
1997, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
4Q
GND
CLK
5Q
5D
1
next