74LCX16245MTDX

Overview

The onsemi 74LCX16245MTDX is a dual bus transceiver from the 74LCX logic family, featuring two independent 16-bit channels in a 48-pin TSSOP package. It operates within a supply voltage range of 2V to 3.6V and supports LVTTL/TTL input levels with LVCMOS outputs. The device provides bidirectional data transfer with non-inverting polarity and includes bus hold functionality. Key electrical parameters include a maximum propagation delay of 5.2ns at 50pF load, and output drive currents of ±24mA. It functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Dual 16-bit bidirectional bus architecture for high-density data routing
• Bus hold feature maintains previous state during invalid input conditions
• Compatible with LVTTL and TTL input logic levels while driving LVCMOS outputs
• Low power CMOS technology optimized for 2V to 3.6V operation

Applications

• High-speed data buses in consumer electronics
• Memory interface connections in embedded systems
• I/O expansion modules requiring level shifting
• Portable devices utilizing low voltage power supplies

Procurement Notes

Verify the specific suffix MTDX corresponds to the required tape and reel packaging configuration for automated assembly processes. Confirm that the component meets RoHS compliance standards if environmental regulations apply to the final product design. Ensure the ordering part number matches the exact pin count and package dimensions specified in the official datasheet to prevent footprint mismatches during PCB layout.

Selection Notes

Select this component when designing systems requiring dual 16-bit wide data paths with low voltage compatibility. The 74LCX series offers superior speed compared to standard HC logic while maintaining lower power consumption. Consider the 48-pin TSSOP package constraints regarding thermal dissipation and board space. Verify that the system's operating voltage remains strictly within the 2V to 3.6V window to ensure signal integrity and avoid latch-up conditions.

Part Context

This device belongs to the Fairchild Semiconductor (now onsemi) 74LCX family, which utilizes advanced CMOS technology for high-speed digital applications. The LCX series is designed to bridge the gap between older TTL-compatible logic and modern low-voltage CMOS standards. As a bus transceiver, it facilitates efficient data movement between different system segments, serving as a critical interconnect solution in complex digital architectures.

Replacement Considerations

The 74LCX16245GX is a documented alternative offering identical logical functionality in a 54-FBGA package. Designers must account for significant differences in physical footprint and pinout mapping when substituting the FBGA variant for the TSSOP version. Electrical characteristics remain consistent, but mechanical integration requires complete redesign of the mounting area.