MC74AC564 Datasheet, PDF (1/9 Pages) Motorola, Inc – OCTAL D-TYPE LATCH WITH 3-STATE OUTPUTS

Octal D-Type Latch
with 3-State Outputs
The MC74AC564/74ACT564 is a high-speed, low power octal
flip-flop with a buffered common Clock (CP) and a buffered
common Output Enable (OE).
The information presented to the D inputs is stored in the flip-flops
on the LOW-to-HIGH Clock (CP) transition.
The MC74AC564/74ACT564 device is functionally identical to
the MC74AC574/74ACT574, but with inverted outputs.
• Inputs and Outputs on Opposite Sides of Package Allowing Easy
Interface with Microprocessors
• Useful as Input or Output Port for Microprocessors
• Functionally Identical to MC74AC574/74ACT574 but with Inverted
Outputs
• 3-State Outputs for Bus-Oriented Applications
• Outputs Source/Sink 24 mA
• ′ACT564 Has TTL Compatible Inputs
V_CC O₀ O₁ O₂ O₃ O₄ O₅ O₆ O₇ CP
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
OE D₀ D₁ D₂ D₃ D₄ D₅ D₆ D₇ GND
Figure 1. Pinout: 20−Lead Packages Conductors
(Top View)
PIN NAMES
D₀−D₇
CP
OE
O₀−O₇
Data Inputs
Clock Pulse Input
3-State Output Enable Input
3-State Outputs
MC74AC564
MC74ACT564
OCTAL D-TYPE
LATCH WITH
3-STATE OUTPUTS
N SUFFIX
CASE 738-03
PLASTIC
DW SUFFIX
CASE 751D-04
PLASTIC
D₀ D₁ D₂ D₃ D₄ D₅ D₆ D₇
CP
OE
O₀ O₁ O₂ O₃ O₄ O₅ O₆ O₇
Figure 2. LOGIC SYMBOL
© Semiconductor Components Industries, LLC, 2006
1
June, 2006 − Rev. 5
Publication Order Number:
MC74AC564/D