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Product Detailed Parameters
- Description：54AHC240 OCTAL BUFFERS/DRIVERS W
- Series：54AHC
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：Buffer, Inverting
- Number of Elements：2
- Number of Bits per Element：4
- Input Type：-
- Output Type：3-State
- Current - Output High, Low：8mA, 8mA
- Voltage - Supply：2V ~ 5.5V
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：20-CDIP (0.300", 7.62mm)
- Supplier Device Package：20-CDIP
- Grade：-
- Qualification：-
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Overview
The SNJ54AHC240J is a military-grade octal buffer and line driver manufactured by Texas Instruments. It features two independent 4-bit buffers with separate output-enable inputs and three-state outputs. The device operates within a supply voltage range of 2V to 5.5V and supports an operating temperature range from -55°C to 125°C. It utilizes AHC CMOS technology, providing low propagation delay and high drive capability suitable for bus-oriented applications.
Feature Summary
- Provides octal buffering with dual 4-bit channels and independent control
- Features three-state outputs for effective bus management
- Supports wide supply voltage operation from 2V to 5.5V
- Designed for military environments with extended temperature ratings
Applications
- Memory-address drivers
- Clock drivers
- Bus-oriented receivers and transmitters
Procurement Notes
Verify the specific ordering suffix 'J' corresponds to the 20-lead ceramic dual in-line package (CDIP). Confirm that the component meets QML certification requirements if intended for defense or aerospace use. Ensure the datasheet revision matches the design specifications for electrical characteristics and pin configurations.
Selection Notes
Select this component when military-grade reliability and extended temperature performance are required. It is appropriate for designs needing high-speed data transmission with low power consumption. Consider the CDIP package constraints for board layout and thermal management compared to surface-mount alternatives.
Part Context
This part belongs to the SNx4AHC240 family of octal buffers/drivers. The 'SNJ' prefix indicates a military-grade version produced under strict quality controls. It shares functional similarities with commercial variants but offers enhanced durability and performance specifications for harsh operating conditions.
Replacement Considerations
SNJ54AHC240FK
FAQ
What is the input voltage tolerance?
The inputs are 5.5V tolerant, allowing them to interface with 5V logic even when the device VCC is lower.
How does the output enable function work?
When OE is low, data passes from inputs to outputs. When OE is high, the outputs enter a high-impedance state.
