Texas Instruments CD74ACx257/CD74ACT258 Quad 2-Input Multiplexers
Texas Instruments CD74ACx257/CD74ACT258 Quad 2-Input Multiplexers are quad 2-input multiplexers with three-state outputs that utilize Advanced CMOS logic technology. The CD74AC257 and CD74ACT257 have non-inverting outputs, while the CD74ACT258 has inverting outputs. The Texas Instruments CD74ACx257/CD74ACT258 have a balanced noise immunity at 30% of the supply voltage and a 1.5V to 5.5V operating range.
Features
- CD74AC257 and CD74ACT257 have non-inverting outputs
- CD74ACT258 has inverting outputs
- Buffered inputs
- Typical propagation delay of 4.4ns at VCC = 5V, TA = 25°C, CL = 50pF
- SCR-latch-up-resistant CMOS process and circuit design
- Balanced propagation delays
- Speed of bipolar FAST™/AS/S with significantly reduced power consumption
- AC types feature 1.5V to 5.5V operation and balanced noise immunity at 30% of the supply
- ±24mA output drive current with fanout to 15 FAST ICs
- Drives 50Ω transmission lines
Applications
- Data bus multiplexing
- Microprocessor and memory interface
- Test and diagnostic systems
- Logic function implementation
- Communication systems
- Educational and prototyping use
Additional Resources
- Application Note: Designing With Logic
- Application Note: Implications of Slow or Floating CMOS Inputs
- Application Note: Understanding and Interpreting Standard-Logic Data Sheets
- Application Note: Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc
- Selection Guide: Logic Guide
- User Guide: LOGIC Pocket Data Book
Block Diagram & Truth Table
Development Tool
Texas Instruments 14-24-LOGIC-EVM Logic Evaluation Module (EVM)
Generic evaluation module developed to support any TI logic leaded device in a 14 to 24 pin count.
Publicado: 2025-07-08
| Actualizado: 2025-07-17