DESCRIPTION
The 74ACT574 is an advanced high-speed CMOS OCTAL D-TYPE FLIP-FLOP with 3 STATE OUTPUT NON INVERTING fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology.
These 8 bit D-Type Flip-Flop are controlled by a clock input (CK) and an output enable input (OE). On the positive transition of the clock, the Q outputs will be set to the logic that were setup at the D inputs.
While the (OE) input is low, the 8 outputs will be in a normal logic state (high or low logic level) and while high level the outputs will be in a high impedance state.
The output control does not affect the internal operation of flip-flops; that is, the old data can be retained or the new data can be entered even while the outputs are off.
This device is designed to interface directly High Speed CMOS systems with TTL and NMOS components.
All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage.
FEATURES
■ HIGH SPEED:fMAX = 270MHz (TYP.) at VCC = 5.0V
■ LOW POWER DISSIPATION:ICC = 4µA(MAX.) at TA=25°C
■ COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.), VIL = 0.8V (MAX.)
■ 50Ω TRANSMISSION LINE DRIVING CAPABILITY
■ SYMMETRICAL OUTPUT IMPEDANCE:|IOH| = IOL = 24mA (MIN)
■ BALANCED PROPAGATION DELAYS:tPLH ≅ tPHL
■ OPERATING VOLTAGE RANGE:VCC (OPR) = 4.5V to 5.5V
■ PIN AND FUNCTION COMPATIBLE WITH74 SERIES 574
■ IMPROVED LATCH-UP IMMUNITY
(Picture:Pinout / Diagram)
