Product Summary

The SN54LS299J is an 8-Bit Universal Shift /Storage Register with 3-state outputs. Four modes of operation are possible: hold (store), shift left, shift right and load data. The parallel load inputs and flip-flop outputs are multiplexed to reduce the total number of package pins. Separate outputs are provided for flip-flops Q0 and Q7 to allow easy cascading. A separate active LOW Master Reset is used to reset the SN54LS299J.

Parametrics

SN54LS299J absolute maximum ratings: (1)VCC, Supply Voltage: 4.5 to 5.5V; (2)TA, Operating Ambient Temperature Range: -55 to 125℃; (3)IOH, Output Current — High Q0, Q7: -0.4 mA; (4)IOL, Output Current — Low Q0, Q7: 4.0mA; (5)IOH Output Current — High I/O0–I/O7: -1.0mA; (6)IOL Output Current — Low I/O0–I/O7: 12mA.

Features

SN54LS299J features: (1)Common I/O for Reduced Pin Count; (2)Four Operation Modes: Shift Left, Shift Right, Load and Store; (3)Separate Shift Right Serial Input and Shift Left Serial Input for Easy Cascading; (4)3-State Outputs for Bus Oriented Applications; (5)Input Clamp Diodes Limit High-Speed Termination Effects; (6)ESD > 3500 Volts.

Diagrams

SN54LS299J block diagram