Manufacturer Part Number
SN74HCT240DW
Manufacturer
Texas Instruments
Introduction
The SN74HCT240DW is a part of the 74HCT series which includes logic buffers, drivers, receivers, and transceivers.
Product Features and Performance
Integrated dual 4-bit inverting buffer with 3-state outputs for bus-oriented applications
High-current output drive capability
Typical propagation delay: 15 ns
Maximum clock frequency: 70 MHz
Product Advantages
Compatible with TTL input levels
Increased drive strength simplifies interfacing with other logic levels
High impedance 3-state outputs for bus interfacing
Key Technical Parameters
Number of Elements: 2
Number of Bits per Element: 4
Current - Output High, Low: 6mA, 6mA
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: -40°C ~ 85°C
Quality and Safety Features
Complies with JEDEC standard no. 7A requirements
ESD protection exceeds JESDEC 1000 V standards
Latch-up performance exceeds 250 mA per JESDEC standard
Compatibility
Inputs compatible with TTL levels
3-State outputs interface with TTL and CMOS
Application Areas
Used in bus-oriented applications
Ideal for driving loads with a high-input impedance
Product Lifecycle
Product Status: Discontinued at Digi-Key
Potential for sourcing difficulties as the product is nearing end of life
Several Key Reasons to Choose This Product
Offers a balance of speed and power consumption, suitable for intermediate speed applications
High output current enables direct driving of small LEDs or relays
3-state outputs that allow for connection to system buses
TTL level compatibility aids in legacy system upgrades or repairs
Surface-mount package supports compact and high-density circuit design