The TC74VHC157FT(ELK) is a high-speed CMOS Quad 2-Channel Multiplexer manufactured by Toshiba Semiconductor and Storage. This device is fabricated with silicon gate CMOS technology, achieving high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining the low power consumption of CMOS. It's designed for use in systems requiring selection and routing of digital data.

Applications:

• Data selection and routing
• Address multiplexing
• Memory addressing
• Signal gating
• Logic function implementation

Features:

• High-speed operation: tpd = 4.3 ns (typ.) at VCC = 5 V
• Low power dissipation: ICC = 4 μA (max) at VCC = 5 V
• High noise immunity: VNIH = VNIL = 28 % VCC (min)
• Output drive capability: 10 LSTTL loads
• Symmetrical output impedance: |IOH| = IOL = 8 mA (min)
• Balanced propagation delays: tPLH ≈ tPHL
• Wide operating voltage range: VCC = 2 V to 5.5 V
• Pin and function compatible with 74LS157

Benefits:

• Improved system performance due to high-speed operation.
• Reduced power consumption compared to bipolar logic, leading to energy savings and reduced heat dissipation.
• Enhanced noise immunity, contributing to more reliable system operation in noisy environments.
• Increased fan-out capability, enabling the device to drive a larger number of loads.
• Simplified system design due to pin compatibility with industry-standard 74LS157 devices.
• Versatile application range due to the wide operating voltage range.

Additional Details:

The TC74VHC157FT(ELK) is supplied in a TSSOP package. This multiplexer selects one of four sources of data based on the state of the Select inputs. The selected data appears at the Output. The Enable input, when HIGH, forces the Output LOW regardless of the state of the Select inputs. The device operates over a wide temperature range, making it suitable for various industrial and commercial applications. The inputs are equipped with protection circuits against static discharge, ensuring high reliability.