DESCRIPTION

· The MC74VHC573/MC74VHCT573A is a high-speed CMOS octal latch with 3-state output, fabricated using silicon gate CMOS technology.

· It operates at speeds comparable to Bipolar Schottky TTL while maintaining low power dissipation typical of CMOS.

· The device features an 8-bit D-type latch controlled by latch enable and output enable inputs, with outputs entering a high impedance state when the output enable is high.

· MC74VHC573 inputs are compatible with standard CMOS levels, whereas MC74VHCT573A inputs are compatible with TTL levels.

· The MC74VHCT573A can function as a level converter for interfacing between 3.3 V and 5.0 V systems, providing full 5.0 V CMOS level output swings.

· The internal circuit includes a buffer output for high noise immunity and stable output, with inputs tolerating up to 5.5 V, facilitating interfacing between 5 V and 3 V systems.

· Output structures provide protection when VCC = 0 V, safeguarding against device destruction from supply voltage-input/output voltage mismatch, battery backup, and hot insertion.

FEATURES

· High Speed: tPD = 4.5 ns (Typ) at VCC = 5.0 V (VHC); tPD = 7.7 ns (Typ) at VCC = 5.0 V (VHCT).

· Low Power Dissipation: ICC = 4.0 µA (Max) at TA = 25°C.

· High Noise Immunity: VNIH = VNIL = 28%.

· Power Down Protection.

· Balanced Propagation Delays.

· Designed for: 2.0 V to 5.5 V (VHC); 4.5 V to 5.5 V (VHCT).

· Low Noise: VOLP = 1.2 V (Max) (VHC); VOLP = 1.6 V (Max) (VHCT).

· Pin and Function Compatible with Other Standard Logic Families.

· Latchup Performance Exceeds 100 mA.

· ESD Performance: Human Body Model > 2000 V.

· Chip Complexity: 234 FETs or 58.5 Equivalent Gates.

· Pb-Free, Halogen Free/BFR Free, and RoHS Compliant.

APPLICATIONS

· Suitable for high-speed data latching in digital systems.

· Ideal for level shifting between 3.3 V and 5.0 V systems.

· Used in applications requiring high noise immunity and stable outputs.

· Applicable in systems needing protection against supply voltage mismatches, battery backup, and hot insertion scenarios.

· Compatible with standard logic families, making it versatile for various digital logic applications.