SN74CBTLV3857DW

Overview

The SN74CBTLV3857DW is a low-voltage digital bus switch IC manufactured by Texas Instruments. It features ten independent FET-based switches with pull-down resistors, designed for high-speed data routing in portable applications. The device operates within a supply voltage range of 3.0 V to 3.6 V, typically at 3.3 V. Key electrical parameters include a maximum on-resistance of 8 Ohms and a maximum propagation delay of 250 ps. It supports surface-mount installation in an SOIC-24 package and functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrates ten independent single-pole single-throw (SPST) FET switches for flexible signal routing.
• Incorporates internal pull-down resistors on control inputs to ensure defined logic states during power-up or idle conditions.
• Optimized for low-power consumption with a maximum supply current of 25 uA.
• Provides bidirectional data transmission capability suitable for various digital bus architectures.

Applications

• Portable consumer electronics requiring efficient bus switching
• Computer and peripheral equipment signal routing
• High-speed data line isolation and selection

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with the target system's voltage levels and thermal requirements. Confirm RoHS compliance status through the latest datasheet revision. Cross-reference the part number with authorized distributors to validate authenticity and availability channels before finalizing procurement decisions.

Selection Notes

Select this component when designing circuits that require multiple isolated signal paths with minimal insertion loss. The 10-bit configuration reduces board space compared to using individual switches. Verify that the 8 Ohm on-resistance meets the signal integrity requirements of the specific application. Consider the SOIC-24 footprint constraints during PCB layout planning to ensure adequate thermal dissipation and trace routing clearance.

Part Context

This device belongs to the SN74CBTLV3857 series of low-voltage bus switches. It is part of Texas Instruments' portfolio focused on high-performance signal switching solutions for mobile and computing platforms. The series offers variations in bit width and package options to accommodate different design densities and performance needs within the same logical family.

Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the same series. Verify functional equivalence regarding on-resistance and propagation delay when evaluating substitute components. Ensure any replacement maintains the same voltage operating range and package dimensions for seamless integration into existing designs.