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MC74AC564

Motorola
Part Number MC74AC564
Manufacturer Motorola
Description OCTAL D-TYPE LATCH
Published Oct 14, 2006
Detailed Description Octal D-Type Latch with 3-State Outputs The MC74AC564/74ACT564 is a high-speed, low power octal flip-flop with a buffere...
Datasheet PDF File MC74AC564 PDF File

MC74AC564
MC74AC564

Overview
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 VCC 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 MC74AC564 MC74ACT564 FUNCTIONAL DESCRIPTION The MC74AC564/74ACT564 consists of eight edgetriggered flip-flops with individual D-type inputs and 3-state complementary outputs.
The buffered clock and buffered Output Enable are common to all flip-flops.
The eight flip-flops will store the state of their individual D inputs that meet the setup and hold times requirements on the LOW-to-HIGH Clock (CP) transition.
With the Output Enable (OE) LOW, the contents of the eight flip-flops are available at the outputs.
When OE is HIGH, the outputs go to the high impedance state.
Operation of the OE input does not affect the state of the flip-flops.
FUNCTION TABLE Inputs OE ...


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