Pinouts & Pin References
for ICs & Semiconductors.
Pinout diagrams for timers, op-amps, logic gates, voltage regulators, and driver ICs.
All Boards, Chips & Connectors
Development platforms, microcontrollers, ICs and standard interfaces
74HC193 Synchronous 4-Bit Binary Up/Down Counter
Synchronous 4-bit reversible up/down binary counter with separate Count-Up and Count-Down clocks, asynchronous parallel load (~PL), asynchronous master reset (MR), and cascade outputs.
74HC238 3-to-8 Line Decoder / Demultiplexer
High-speed 3-to-8 line decoder/demultiplexer with active-high outputs (complement of 74HC138) and three enable inputs (two active-low and one active-high).
74HC245 Octal Bus Transceiver with 3-State Outputs
Octal bidirectional bus transceiver with 3-state outputs. DIR controls data direction (HIGH = A→B, LOW = B→A). ~OE (Active Low) disables all outputs to high-impedance. Widely used for 3.3V↔5V level translation.
74HC32 / 74LS32 Quad 2-Input OR Gate
Quad 2-input OR gate. Available in 74LS (low-power Schottky TTL) and 74HC (high-speed CMOS) families, pin-compatible. Output is HIGH when at least one input is HIGH.
74HC393 Dual 4-Bit Binary Ripple Counter
Dual 4-bit binary ripple counter with individual clock (~CP) and master reset (MR) inputs for each 4-bit stage (can be cascaded for 8-bit counting).
74HC4051 8-Channel Analog Multiplexer / Demultiplexer
Single 8-channel bidirectional analog switch (multiplexer/demultiplexer). Address pins S0/S1/S2 select one of 8 channels (Y0–Y7) to connect to the common I/O (Z). ~E disables all switches. VEE allows bipolar analog signals; tie to GND for 0–5V operation.
74HC541 Octal 3-State Non-Inverting Buffer / Line Driver
Octal non-inverting buffer and line driver with 3-state outputs and straight-through flow-through pinout architecture for easy PCB bus routing.
74HC573 Octal Transparent D-Type Latch with 3-State Outputs
Octal transparent D-type latch with 3-state outputs and flow-through pinout architecture, ideal for driving bus lines or memory address latches.
74HC74 Dual D-Type Positive-Edge-Triggered Flip-Flop
Dual positive-edge-triggered D-type flip-flop with asynchronous individual set (~PRE) and clear (~CLR) inputs and complementary Q and ~Q outputs.
74HC86 Quad 2-Input XOR Gate
Quad 2-input exclusive-OR (XOR) gate in high-speed CMOS. 2–6V supply. Output is HIGH when inputs differ. Pin-compatible with 74LS86.
AMS1117-3.3 Low Dropout Voltage Regulator
1A Low Dropout positive fixed 3.3V voltage regulator in surface-mount SOT-223 package with thermal overload and short-circuit current limiting.
AMS1117-5.0 Low Dropout Voltage Regulator
1A Low Dropout positive fixed 5.0V voltage regulator in surface-mount SOT-223 package with internal current limiting and thermal protection.
ATmega32U4 8-Bit Microcontroller with USB (TQFP-44)
16MHz, 32kB Flash, 2.5kB SRAM, 1kB EEPROM, USB 2.0, TQFP-44
ATtiny84 8-Bit AVR Microcontroller (DIP-14)
20MHz, 8kB Flash, 512B SRAM, 512B EEPROM, debugWIRE, DIP-14
CD4013B CMOS Dual D-Type Flip-Flop
High-voltage CMOS dual D-type static flip-flop with independent Set, Reset, Clock, and Data inputs operating over a 3V to 18V supply range.
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