Texas Instruments SN74LS51D Gates and Inverters
Surface mount logic gate IC featuring two 2-wide 2-input AND-OR-Invert gates and two 2-wide 3-input AND-OR-Invert gates.

Same model may have multiple batches, images only for reference.
Technical Specifications
Texas Instruments SN74LS51D Gates and Inverters technical specifications.
General
Alternate Parts Comparison (SN74LS51D vs SN74LS151DR vs SN74LS153DR vs SN74LS155ADR)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 14-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C |
| Supply Voltage | 5V | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V |
| Current Output High Low | 400µA, 8mA | 400µA, 8mA | 400µA, 8mA | 400µA, 8mA |
| Circuit | -- | 1 x 8:1 | 2 x 4:1 | 1 x 2:4 |
| Independent Circuits | -- | 1 | 1 | 2 |
| Type | -- | Multiplexer | Multiplexer | Decoder/Demultiplexer |
| Voltage Supply Source | -- | Single Supply | Single Supply | Single Supply |
| Action |
Texas Instruments SN74LS51D Gates and Inverters Overview
Surface mount logic gate IC featuring two 2-wide 2-input AND-OR-Invert gates and two 2-wide 3-input AND-OR-Invert gates. This bipolar technology component operates with a 5V supply voltage (4.75V to 5.25V) and offers a low-level output current of 8mA. The SOIC package measures 8.75mm in length, 4mm in width, and 1.5mm in height.
It supports a maximum operating temperature of 70°C and has a propagation delay of 20ns.
