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Product Detailed Parameters
- Description：IC QUAD 2-INP
- Series：54LS
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：NAND Gate
- Number of Circuits：4
- Number of Inputs：2
- Features：-
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Max)：12 mA
- Current - Output High, Low：1.2mA, 12mA
- Input Logic Level - Low：0.7V
- Input Logic Level - High：2V
- Max Propagation Delay @ V, Max CL：24ns @ 5V, 45pF
- Operating Temperature：-55°C ~ 125°C
- Mounting Type：Through Hole
- Supplier Device Package：14-CDIP
- Package / Case：14-CDIP (0.300", 7.62mm)
- Grade：-
- Qualification：-
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Overview
The SN54LS37J is a military-grade quad two-input NAND gate from the LS TTL series. It features four independent logic circuits in a 14-pin ceramic dual in-line package (CDIP). The device operates within a temperature range of -55 °C to 125 °C and requires a nominal 5 V supply voltage. Electrical characteristics include a high-level output current of 1.2 mA at 3.5 V and a low-level output current of 12 mA at 0.4 V. The package dimensions are approximately 19.495 mm in length with a maximum height of 5.08 mm.
Feature Summary
- Contains four independent two-input NAND logic gates for complex digital circuitry
- Utilizes Low-power Schottky (LS) technology for reduced power consumption
- Constructed with glass-sealed ceramic packaging for environmental durability
- Designed for extended industrial and military temperature environments
Applications
- Military avionics and defense communication systems
- Spacecraft telemetry and control logic
- High-reliability industrial process controllers
- Harsh environment data acquisition systems
Procurement Notes
Verify the specific manufacturer source, as Texas Instruments, Motorola, and NXP have all produced this component. Confirm the package material is genuine ceramic rather than plastic variants. Ensure the part meets the required military temperature specifications (-55 °C to 125 °C) and check for RoHS compliance status if applicable to the project requirements.
Selection Notes
Select this component when high noise immunity and low power dissipation are required in extreme temperature conditions. The LS series offers a balance between speed and power efficiency suitable for battery-operated or thermally constrained military applications. Ensure the design accommodates the specific input and output current capabilities defined in the datasheet.
Part Context
This component belongs to the SN54xx family, which denotes military-grade performance standards compared to the commercial SN74xx series. The 'LS' suffix indicates Low-power Schottky logic, providing improved power-delay product over standard TTL. The 'J' suffix typically identifies the ceramic DIP package variant essential for radiation and thermal resistance.
