Philips 74HC564
The 74HC/HCT564 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. The 8 flip-flops will store the state of their individual D-inputs that meet the set-up and hold times requirements on the LOW-to-HIGH CP transition.FEATURES
● 3-state inverting outputs for bus oriented applications● 8-bit positive-edge triggered register
● Common 3-state output enable input
● Independent register and 3-state buffer operation
● Output capability: bus driver
● ICC category: MSI
GENERAL DESCRIPTION
7A. 74HC/HCT564 The 74HC/HCT564 are octal D-type flip-flops featuring separate D-type inputs for each flip-flop and inverting 3-state outputs for bus oriented applications. A clock (CP) and an output enable (OE) input are common to all flip-flops. When OE is LOW, the contents of the 8 flip-flops are available at the outputs. When OE is HIGH, the outputs go to the high impedance OFF-state. Operation of the OE input does not affect the state of the flip-flops. The “564” is functionally identical to the “574” but has inverting outputs. The “564” is functionally identical to the “534”, but has a different pinning. QUICK REFERENCE DATA GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns TYPICAL SYMBOL tPHL/ tPLH fmax CI CPD Notes 1. CPD i...