SN74ALS564B
SN74ALS564B is OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOP manufactured by Texas Instruments.
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 VCC 19 1Q 18 2Q 17 3Q 16 4Q 15 5Q 14 6Q 13 7Q 12 8Q 11 CLK
SN54ALS564B . . . FK PACKAGE (TOP VIEW)
1Q
1D
2D
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.
8D
3D
3 2 1 20 19
2Q
4D 5
17 3Q
5D 6
16 4Q
6D 7
15 5Q
7D 8
14 6Q
9 10 11 12 13
8Q
7Q
FUNCTION TABLE (each flip-flop)
INPUTS OE CLK D
OUTPUT...
