Texas Instruments

High Speed CMOS Logic Dual Negative-Edge-Triggered J-K Flip-Flops with Set and Reset

The ’HC123, ’HCT123, CD74HC423 and CD74HCT423 are dual monostable multivibrators with resets. They are all retriggerable and differ only in that the 123 types can be triggered by a negative to positive reset pulse; whereas the 423 types do not have this feature. An external resistor (RX) and an external... Read More

This device contains four independent buffers with 3-state outputs. Each gate performs the Boolean function Y = A in positive logic. This device contains four independent buffers with 3-state outputs. Each gate performs the Boolean function Y = A in positive logic.

This device contains four independent buffers with 3-state outputs. Each gate performs the Boolean function Y = A in positive logic. This device contains four independent buffers with 3-state outputs. Each gate performs the Boolean function Y = A in positive logic.

This device contains four independent buffers with 3-state outputs. Each gate performs the Boolean function Y = A in positive logic. This device contains four independent buffers with 3-state outputs. Each gate performs the Boolean function Y = A in positive logic.

This device contains four independent 2-input NAND gates. Each gate performs the Boolean function Y =A ● Bin positive logic. This device contains four independent 2-input NAND gates. Each gate performs the Boolean function Y =A ● Bin positive logic.

The CD74HC137, CD74HCT137, ’HC237, and CD74HCT237 are high speed silicon gate CMOS decoders well suited to memory address decoding or data routing applications. Both circuits feature low power consumption usually associated with CMOS circuitry, yet have speeds comparable to low power Schottky TTL logic. Both circuits have three binary select... Read More

High Speed CMOS Logic 3-to-8 Line Decoder Demultiplexer Inverting and Non-Inverting

The CD74HC138 is a high-speed silicon-gate CMOS decoder well suited to memory address decoding or data routing applications. This circuit features low power consumption usually associated with CMOS circuitry, yet has speeds comparable to low-power Schottky TTL logic. The circuit has three binary select inputs (A0, A1, and A2). If... Read More

The ’HC139 and ’HCT139 devices contain two independent binary to one of four decoders each with a single active low enable input (1E\ or 2E\). Data on the select inputs (1A0 and 1A1 or 2A0 and 2A1) cause one of the four normally high outputs to go low. If the... Read More

This device contains six independent inverters with Schmitt-trigger inputs. Each gate performs the Boolean function Y =Ain positive logic. This device contains six independent inverters with Schmitt-trigger inputs. Each gate performs the Boolean function Y =Ain positive logic.

The CDx4HC147 and CD74HCT147 are 9-input priority encoders. These devices provide the 10-line to 4-line priority encoding function by use of the implied decimal "zero." The CDx4HC147 and CD74HCT147 are 9-input priority encoders. These devices provide the 10-line to 4-line priority encoding function by use of the implied decimal "zero."

High Speed CMOS Logic 8-Input Multiplexer

The ’HC153 and ’HCT153 are dual 4- to 1-line selector/multiplexers that select one of four sources for each section by the common select inputs, S0 and S1. When the enable inputs (1E\, 2E\) are HIGH, the outputs are in the LOW state. The ’HC153 and ’HCT153 are dual 4- to... Read More

The ’HC154 and ’HCT154 are 4-to-16 line decoders/demultiplexers with two enable inputs, E1 and E2. A High on either enable input forces the output into the High state. The demultiplexing function is performed by using the four input lines, A0 to A3, to select the output lines Y0\ to Y15\,... Read More

The ’HC157, ’HCT157, ’HC158, and ’HCT158 are quad 2-input multiplexers which select four bits of data from two sources under the control of a common Select input (S). The Enable input (E\) is active Low. When (E\) is High, all of the outputs in the 158, the inverting type, (1Y\-4Y\)... Read More

The ’HC161, ’HCT161, ’HC163, and ’HCT163 are presettable synchronous counters that feature look-ahead carry logic for use in high-speed counting applications. The ’HC161 and ’HCT161 are asynchronous reset decade and binary counters, respectively; the ’HC163 and ’HCT163 devices are decade and binary counters, respectively, that are reset synchronously with the... Read More

The ’HC161, ’HCT161, ’HC163, and ’HCT163 are presettable synchronous counters that feature look-ahead carry logic for use in high-speed counting applications. The ’HC161 and ’HCT161 are asynchronous reset decade and binary counters, respectively; the ’HC163 and ’HCT163 devices are decade and binary counters, respectively, that are reset synchronously with the... Read More

The ’HC164 and ’HCT164 are 8-bit, serial-in, parallel-out, shift registers with asynchronous reset. Data is shifted on the positive edge of Clock (CLK). A LOW on the RESET (CLR) pin resets the shift register and all outputs go to the LOW state regardless of the input conditions. Two Serial Data... Read More

High Speed CMOS Logic 8-Bit Parallel-In/Serial-Out Shift Register