74LVT2245MTC

Overview

The onsemi 74LVT2245MTC is a low-voltage octal bidirectional transceiver featuring 3-state inputs and outputs. It operates within a supply voltage range of 2.7V to 3.6V and supports interface capability to systems at 5V VCC. The device includes an equivalent 25Ω series resistor in the B port outputs to reduce overshoot and undershoot. It provides output drive capabilities of -12mA/+12mA on the B port and -32mA/+64mA on the A port. Propagation delays are specified with maximum values up to 7.3ns depending on direction and load conditions.

Feature Summary

• Supports live insertion and extraction without bus disruption
• Provides power-up/down high-impedance state for glitch-free operation
• Includes integrated series resistance on B port outputs to minimize signal ringing

Applications

• Bus-oriented data transmission applications
• Low voltage (3.3V) to 5V environment TTL interface bridging
• Bidirectional data flow control between memory and microprocessor buses

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package marking matches the TSSOP-20 specification. Check RoHS compliance documentation against current JEDEC standards. Validate datasheet revision history to ensure technical specifications align with design requirements before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring bidirectional data transfer between different voltage domains. Ensure the application benefits from the specific drive strengths available on both ports. Consider the 25Ω series resistor feature if signal integrity improvements are necessary for the B port connections. Verify that the operating temperature range meets environmental constraints.

Part Context

This device belongs to the LVT logic family, designed for low-power high-speed operations using advanced BiCMOS technology. It serves as a bridge between 3.3V and 5V logic levels while maintaining performance comparable to older 5V ABT families. The MTC suffix indicates the 20-lead Thin Shrink Small Outline Package format suitable for surface mount assembly.

Replacement Considerations

The 74LVTH2245MTC is a compatible alternative that includes bushold data inputs, eliminating the need for external pull-up resistors. Both devices share identical pinouts and electrical characteristics except for the input holding feature. Verify functional equivalence regarding the absence or presence of bushold functionality based on specific circuit design needs.