MC74AC564

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 output...