74LVQ245MTR

Overview

The STMicroelectronics 74LVQ245MTR is a low voltage CMOS octal bus transceiver with 3-state outputs, fabricated using sub-micron silicon gate and double-layer metal wiring C2MOS technology. It operates within a supply voltage range of 2V to 3.6V, featuring a typical propagation delay of 5.7 ns at VCC = 3.3V. The device provides symmetrical output impedance with minimum drive currents of |IOH| = IOL = 12mA at VCC = 3.0V. It includes PCI bus levels guaranteed at 24 mA and supports 75Ω transmission line driving capability. Quiescent supply current is maximized at 4µA at TA=25°C.

Feature Summary

• Low power dissipation and low noise operation suitable for 3.3V applications
• Symmetrical output impedance ensuring balanced high and low level drive capabilities
• Built-in protection circuits against static discharge providing 2KV ESD immunity
• Directional control via DIR input and isolation via enable input G

Applications

• Two-way asynchronous communication between data buses
• PCI bus interface applications requiring guaranteed levels
• Driving 75Ω transmission lines in low voltage systems

Procurement Notes

Verify the specific package type associated with the MTR suffix, which indicates tape and reel packaging. Confirm that the operating environment stays within the specified -55°C to +125°C temperature range. Ensure all floating bus terminals are held HIGH or LOW during High Impedance State to prevent undefined logic levels. Check RoHS compliance status through official ST documentation channels before finalizing procurement.

Selection Notes

Select this component when designing low voltage systems requiring an octal bidirectional transceiver with 3-state outputs. It is compatible with TTL outputs and pin/function compatible with the standard 74 series 245 devices. Consider its improved latch-up immunity and low dynamic output current characteristics for sensitive circuit designs. Verify that the required propagation delay fits within the system timing constraints.

Part Context

This part belongs to the 74LVQ245 family of low voltage CMOS octal bus transceivers manufactured by STMicroelectronics. The 'MTR' suffix specifically denotes the SO-20 package variant supplied in tape and reel format. This family is designed for high-speed, low-power applications in the 3.3V domain, offering enhanced performance over standard LVX or LVC series counterparts.

Replacement Considerations

Check for direct replacements such as the 74LVQ245TTR (TSSOP-20 package) from STMicroelectronics. Other manufacturers may offer functionally equivalent parts like the 74LVC245 or 74LVCT245, but verify pin compatibility and electrical specifications carefully.