SN54ALS564B Datasheet, PDF (1/5 Pages) Texas Instruments – OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS

SN54ALS564B, SN74ALS564B
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS
SDAS164B – APRIL 1982 – REVISED JANUARY 1995
• 3-State Buffer-Type Inverting Outputs Drive
Bus Lines Directly
• Bus-Structured Pinout
• Buffered Control Inputs
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), Standard Plastic (N) and
Ceramic (J) 300-mil DIPs, and Ceramic Flat
(W) Packages
description
These octal D-type edge-triggered flip-flops
feature inverting 3-state outputs designed
specifically for bus driving. They are particularly
suitable for implementing buffer registers, I/O
ports, bidirectional bus drivers, and working
registers.
SN54ALS564B . . . J OR W PACKAGE
SN74ALS564B . . . DW OR N PACKAGE
(TOP VIEW)
OE ₁
1D ₂
2D 3
3D 4
4D 5
5D 6
6D 7
7D 8
8D 9
GND 10
20 ^V_CC
19 ^1Q
18 2Q
17 3Q
16 4Q
15 5Q
14 6Q
13 7Q
12 8Q
11 CLK
SN54ALS564B . . . FK PACKAGE
(TOP VIEW)
The eight flip-flops enter data on the low-to-high
transition of the clock (CLK) input.
The output-enable (OE) input does not affect
internal operations of the flip-flops. Old data can
be retained or new data can be entered while the
outputs are in the high-impedance state.
The SN54ALS564B is characterized for operation
over the full military temperature range of – 55°C
to 125°C. The SN74ALS564B is characterized for
operation from 0°C to 70°C.
3D
3 2 1 20 19
4
18
2Q
4D ₅
17 ^3Q
5D 6
16 4Q
6D 7
15 5Q
7D 8
14 6Q
9 10 11 12 13
FUNCTION TABLE
(each flip-flop)
INPUTS
OE CLK D
OUTPUT
Q
L
↑
H
L
L
↑
L
H
L
L
X
Q0
H
X
X
Z
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.
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Copyright © 1995, Texas Instruments Incorporated
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