Tony Duell wrote: One-Of-Sixteen Decoder/Demultiplexer The 9311 is a TTL/MSI Multi-Purpose Decoder designed to accept four inputs and provide 16 mutually exclusive outputs. The Circuit uses TTL for high speed and high fan-out capability, and is compatible with all members of the Fairchild TTL family. A0 - A3 - Address Inputs E0, E1 - AND enable (Active LOW) inputs 0 - 15 (Active LOW) Outputs, 10 U.L. is the output LOW drive factor, and 20 U.L. is the output HIGH drive factor. Low Power Quad Latch - LPTTL/MSI is a multifunctional 4-bit latch. The latch is desgined for general purpose storage applications in high speed digital systems. All inputs feature diode clamping to reduce negative line transients. All outputs have active pull-up circuitry to provide low impedance in both logit states for good ac noise immunity. E - Enable (Active LOW) Input D0 - D3 Data Inputs S0 - S3 Set (Active LOW) Inputs MR - Master Reset (Active LOW) Input Q0 - Q3 Latch Outputs The 8273 10-bit Shift Register is an array of binary elements interconnected to perform the serial-in, parallel-out shift function. This device utilizes a common buffered reset and operates from either a positive or negative edge clock pulse. Clock 1 is triggered by a negative going clock pulse and clock 2 is triggered by a positive going clock pulse. The circuit configuration is arranged as a single serial input register with ten true parallel outputs. Truth Table Input Reset (active low) Clock 1 Clock 2 On+1 1 1 Pulse 0 1 0 1 Pulse 0 0 1 1 1 Pulse 1 0 1 1 Pulse 0 1 1 Pulse 1 Q 0 1 Pulse 1 Q 1 1 0 Pulse Q 0 1 0 Pulse Q Note: The unused clock input performs the INHIBIT function. Reset = 0 > Q = 0