Texas Instruments

SN74ALVTH16245GR

SN74ALVTH16245GR Description

The SN74ALVTH16245GR from Texas Instruments is a high-performance, 16-bit non-inverting bus transceiver designed for 2.5V/3.3V systems. Part of the 74ALVTH series, this IC features two 8-bit transceivers with 3-state outputs, enabling bidirectional data flow between buses operating at different voltage levels (2.3V–2.7V or 3V–3.6V). Packaged in a 48-pin TSSOP and supplied in tape-and-reel (TR) format, it is optimized for surface-mount applications. Although marked as obsolete, it remains a robust solution for legacy designs requiring high-speed, low-power operation with 32mA (high) / 64mA (low) drive strength.

SN74ALVTH16245GR Features

• Dual-Supply Voltage Compatibility: Supports 2.5V and 3.3V systems, enhancing flexibility in mixed-voltage environments.
• High Drive Capacity: Delivers 32mA (sourcing) / 64mA (sinking) current, ideal for driving heavily loaded buses.
• Low Power Consumption: ALVTH technology minimizes power dissipation while maintaining high-speed performance (typical propagation delay <4ns).
• 3-State Outputs: Allows bus isolation, preventing contention in multi-master systems.
• Robust Packaging: 48-TSSOP with MSL1 (Unlimited) moisture sensitivity, suitable for automated assembly.
• Compliance: ROHS3 and REACH Unaffected, meeting environmental standards.

SN74ALVTH16245GR Applications

This transceiver excels in systems requiring bidirectional level shifting and high-speed data transfer:

• Telecommunications Equipment: Router/switch backplanes interfacing 2.5V and 3.3V buses.
• Industrial Control Systems: PLCs and motor drives where noise immunity and drive strength are critical.
• Legacy Computing: Upgrading older 5V systems to lower-voltage peripherals.
• Automotive Electronics: Infotainment or CAN bus interfaces (within voltage specs).

Conclusion of SN74ALVTH16245GR

While obsolete, the SN74ALVTH16245GR remains a reliable choice for designers needing high-drive, dual-voltage bus transceivers in space-constrained applications. Its low-power ALVTH architecture, robust output capability, and compliance with environmental standards make it suitable for legacy upgrades or systems requiring mixed-voltage interoperability. For new designs, consider TI’s active alternatives in the ALVT or LVC families.