MC74HC Series DIP-16 Logic ICs – Multiplexer, Counter, Shift Register, Flip-Flop, Pack of 3

$7.08 USD

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MC74HC Series DIP-16 Logic ICs — Multiplexer, Counter, Shift Register, Flip-Flop (3-Pack)

This 3-pack covers the MC74HC series of high-speed CMOS logic ICs in DIP-16 through-hole packages, including multiplexers, binary counters, shift registers, and D flip-flops. All variants operate from 2–6V, are compatible with 3.3V and 5V logic systems, and are rated from -40°C to +125°C for industrial use. Select your required variant from the dropdown.

Variants Available

Part Number	Function	Description
74HC151A	8-to-1 Multiplexer	Selects 1 of 8 data inputs via 3-bit address
74HC163A	4-Bit Synchronous Counter	Presettable binary counter with carry output
74HC164A	8-Bit Shift Register (SIPO)	Serial-in, parallel-out, positive edge clock
74HC174A	Hex D Flip-Flop	6× D-type flip-flop, common clock and reset
74HC194A	4-Bit Bidirectional Shift Register	Parallel load, left/right shift, serial I/O
74HC245A	Octal Bus Transceiver	3-state bidirectional, direction control pin

Common Specifications

Parameter	Value
Supply Voltage	2–6V
Output Current	±25mA per pin
Operating Temperature	-40°C to +125°C
Package	DIP-16 (through-hole, 2.54mm pitch)
Logic Family	HC (High-Speed CMOS)
Quantity	3 pieces

Why Choose MC74HC Series?

2–6V operation — compatible with 3.3V (ESP32, STM32) and 5V (Arduino) systems without level shifters
±25mA output — directly drives LEDs, logic inputs, and small loads without buffers
DIP-16 breadboard-friendly — plugs directly into standard 2.54mm breadboards for easy prototyping
-40°C to +125°C — industrial temperature range for demanding environments
Pin-compatible — with SN74HC (Texas Instruments) and CD74HC (Harris/Intersil) series

Compatible With

Arduino UNO / Nano / Mega (5V logic)
ESP32 / STM32 / Raspberry Pi (3.3V logic)
Standard 2.54mm breadboards and DIP-16 IC sockets
SN74HC series (TI), CD74HC series — pin-compatible alternatives

Frequently Asked Questions

Q: How do I use 74HC164A to expand Arduino digital outputs?
A: Connect DS (serial data) and CP (clock) to 2 Arduino digital pins. Use shiftOut(dataPin, clockPin, MSBFIRST, byte) to shift 8 bits to Q0–Q7. Chain multiple 74HC164A ICs by connecting Q7 of the first to DS of the second for more outputs.

Q: What is the difference between 74HC163A and 74HC161A?
A: Both are 4-bit synchronous binary counters. 74HC163A has synchronous reset (reset takes effect on the next clock edge); 74HC161A has asynchronous reset (reset takes effect immediately). For most digital design applications, 74HC163A is preferred for its predictable synchronous behavior.

Q: Can 74HC245A be used as a 3.3V to 5V level shifter?
A: Yes, with caveats. Power at 5V, connect 3.3V signals to the A-side, read 5V outputs from the B-side. The A-side inputs must not exceed VCC (5V). For bidirectional level shifting, a dedicated level shifter (TXS0108, BSS138) is safer and more reliable.