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Product Description
The 74153 Dual 4-to-1 Multiplexer IC is a classic TTL logic integrated circuit featuring two independent 4-line-to-1-line multiplexers. Designed for digital data routing, parallel-to-serial conversion, and boolean function generation, this chip selects one of four data sources for each of the two sections based on shared common select inputs.
Equipped with independent active-low output enable controls, the 74153 allows seamless cascading or disabling of outputs, making it an essential component for digital logic design, address decoding, and custom multiplexed display systems.
⚠️ Logic & Power Tip: Keep your VCC supply strictly within the standard TTL range of 4.75V to 5.25V DC (5V nominal). Ensure all unused data or select inputs are tied securely to VCC or GND to prevent floating inputs from causing noise or erratic logic switching.
Technical & Architectural Highlights
Dual 4-Channel Configuration: Contains two separate 4-input multiplexers in a single compact DIP-16 package sharing common select lines (A and B).
Active-Low Output Enables (G’): Individual strobe/enable lines for each section allow outputs to be forced into a high-impedance or disabled state independently.
Standard TTL Compatibility: Full electrical and logical compatibility with standard 7400-series TTL logic families and 5V microcontroller I/O pins.
Fast Data Routing: Designed for high-speed data selection and signal routing in synchronous digital systems.
🧰 Recommended Logic ICs & Prototyping Essentials
Building digital logic systems or routing data lines? Pair this IC with these essential components:
7400-Series Logic ICs: Explore gates, counters, decoders, and flip-flops to expand your digital circuit: Pro Tronix Logic ICs Collection
IC Sockets (DIP-16 Solder Sockets): Protect your ICs during prototyping and allow easy chip swapping: Pro Tronix IC Sockets Collection
Solderless Breadboards & Jumpers: Fast, reliable prototyping platforms for logic testing: Pro Tronix Breadboards Collection
Resistor Kits & LEDs: Essential passives and status indicator lights for monitoring digital output states: Pro Tronix Resistors Collection
5V DC Bench Power Supplies: Stable power sources for TTL digital logic circuits: Pro Tronix Power Supplies Collection
Technical Specifications
| Parameter | Value / Specification |
| IC Model | SN74153 / 74153N |
| Logic Family | TTL (Transistor-Transistor Logic) |
| Function | Dual 4-Line to 1-Line Data Multiplexer |
| Operating Voltage | 4.75V to 5.25V DC (5V Nominal) |
| Package Type | DIP-16 (Through-Hole) |
Applications
Data Routing & Selection: Switching between multiple digital data streams into a single microcontroller or processor pin.
Parallel-to-Serial Conversion: Multiplexing parallel bit streams into a continuous serial data line.
Boolean Function Generation: Implementing arbitrary logic functions of up to 4 variables without external gates.
What’s in the Box
1 x 74153 Dual 4-to-1 Multiplexer IC (DIP-16).
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Pinout Configuration (DIP-16)
The 74153 comes in a 16-pin dual in-line package (DIP-16). Looking at the top with the notch pointing left or up, the pin arrangement is:
| Pin Number | Designation | Description |
| Pin 1 | 1G’ | Output Enable (Strobe) for Section 1 (Active Low) |
| Pin 2 | B | Common Select Input 2 (MSB) |
| Pin 3 | 1C3 | Data Input 3 (Section 1) |
| Pin 4 | 1C2 | Data Input 2 (Section 1) |
| Pin 5 | 1C1 | Data Input 1 (Section 1) |
| Pin 6 | 1C0 | Data Input 0 (Section 1) |
| Pin 7 | 1Y | Multiplexer Output (Section 1) |
| Pin 8 | GND | Ground (0V) |
| Pin 9 | 2Y | Multiplexer Output (Section 2) |
| Pin 10 | 2C0 | Data Input 0 (Section 2) |
| Pin 11 | 2C1 | Data Input 1 (Section 2) |
| Pin 12 | 2C2 | Data Input 2 (Section 2) |
| Pin 13 | 2C3 | Data Input 3 (Section 2) |
| Pin 14 | A | Common Select Input 1 (LSB) |
| Pin 15 | 2G’ | Output Enable (Strobe) for Section 2 (Active Low) |
| Pin 16 | VCC | Positive Supply Voltage (5V DC) |
Truth Table (Function Table)
For each of the two identical multiplexer sections, the output depends on the common select lines (B, A) and the active-low enable line (G’):
| Select Inputs | Data Inputs | Output Enable (G’) | Output (Y) |
| B | A | C0, C1, C2, C3 | State |
| X | X | X | High (Disabled / High-Z) |
| L | L | C0, X, X, X | Level of C0 |
| L | H | X, C1, X, X | Level of C1 |
| H | L | X, X, C2, X | Level of C2 |
| H | H | X, X, X, C3 | Level of C3 |
Legend:
H = High Voltage Level
L = Low Voltage Level
X = Don’t Care
