74AVCB164245VRE4

Overview

The SN74AVCB164245VRE4 is a 16-bit dual-supply bus transceiver from the Texas Instruments AVC logic series. It features a 48-pin TVSOP package with bidirectional data flow and three-state outputs. The device supports a VCCA voltage range of 1.4 V to 3.6 V and a VCCB range of 1.4 V to 3.6 V, enabling flexible voltage translation between different logic domains. Key electrical parameters include a maximum propagation delay of 3.1 ns at 30 pF load, with output drive capabilities of -12 mA for high level and 12 mA for low level. It operates within an industrial temperature range of -40 °C to +85 °C.

Feature Summary

• Dual-supply architecture allowing independent power rails for A and B ports to facilitate voltage translation between dissimilar logic families.
• Configurable voltage translation capability that automatically detects port voltages to enable seamless bidirectional data transfer.
• High-speed performance with low propagation delay suitable for demanding digital communication interfaces.

Applications

• Mobile phone applications requiring compact footprint and low power consumption
• Personal electronic devices such as PDAs and portable media players
• Computer peripheral connections including storage and display interfaces

Procurement Notes

Verify the complete part number SN74AVCB164245VRE4 against official Texas Instruments documentation to confirm the specific TVSOP-48 package and E4 lead-free designation. Ensure compatibility with system voltage requirements, specifically checking that both VCCA and VCCB supply rails remain within the 1.4 V to 3.6 V operational limits defined in the datasheet. Confirm thermal management strategies align with the specified -40 °C to +85 °C operating temperature range for reliable performance in target environments.

Selection Notes

Select this component when designing systems that require efficient level shifting between varying voltage domains without external logic gates. The dual-supply design simplifies board layout by eliminating the need for separate translator circuits. Consider the TVSOP-48 package dimensions if space constraints are critical. Verify that the required data rates do not exceed the speed capabilities defined by the propagation delay specifications under your specific load conditions.

Part Context

This device belongs to the Texas Instruments Widebus™ AVC family, which focuses on low-voltage, high-speed bus transceivers. The AVC series is engineered for mobile and handheld applications where power efficiency and signal integrity are paramount. The 16-bit configuration allows for wide data buses, reducing pin count compared to octal alternatives while maintaining high throughput for complex digital systems.

Replacement Considerations

SN74AVCB164245VR: Identical functional equivalent with standard packaging suffix.

FAQ

How does the device handle voltage differences between Port A and Port B?

The SN74AVCB164245VRE4 uses a dual-supply architecture with independent VCCA and VCCB pins. It automatically configures its internal translation circuitry based on the detected voltages on these rails, allowing bidirectional data transfer between any compatible logic levels within the 1.4 V to 3.6 V range.

What is the significance of the 'E4' suffix in the part number?

The 'E4' suffix indicates that the device is manufactured with lead-free terminals and complies with RoHS standards. It denotes a specific material and environmental compliance version of the SN74AVCB164245VR component.