Nexperia USA Inc. 74CBTLV3257DS,118

Overview

74CBTLV3257DS,118 from Nexperia is a quad 1-of-2 high-speed analog multiplexer/demultiplexer in SSOP16 package, operating from 2.3 V to 3.6 V supply, featuring 5 Ω typical ON-resistance, <0.25 ns propagation delay, and rail-to-rail signal switching - used for low-latency data path routing in FPGA I/O expansion and high-speed bus isolation.

For engineers reviewing the 74CBTLV3257DS,118 datasheet, 74CBTLV3257DS,118 pinout, 74CBTLV3257DS,118 application, or 74CBTLV3257DS,118 equivalent, this device supports partial power-down (IOFF), Schmitt-trigger control inputs for noise immunity, and operates across –40 °C to +125 °C - critical for industrial interface consolidation and hot-swap-capable backplane designs.

Technical Context

This device implements four independent bidirectional analog switches, each selectable between two I/O ports (B1/B2) via a shared select (S) input and globally enabled/disabled by an active-low output enable (OE). Its CMOS transmission-gate architecture delivers rail-to-rail analog passband with minimal distortion and no added propagation delay.

Control logic uses Schmitt-trigger inputs on S and OE, ensuring robust operation across the full 2.3–3.6 V VCC range despite slow edge rates (<200 ns/V). The IOFF circuit actively disables all switches during power-down, blocking backflow current when VCC = 0 V - enabling safe live-insertion in mixed-voltage systems.

Key Specifications

Pinout & Package

74CBTLV3257DS,118 is housed in SSOP16 (SOT519-1): plastic shrink small outline package, 16 leads, 0.635 mm pitch, 3.9 mm body width, 1.73 mm max height.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog multiplexer applications.

Compared with SN74CBTLV3257PWR and 74LVC1G3157GW,125, the 74CBTLV3257DS,118 offers optimal balance of compact SSOP16 footprint, lowest RON among quad variants, and native support for synchronized channel control - making it preferred for multi-signal routing in space- and timing-critical embedded systems.

Availability

74CBTLV3257DS,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, FPGA mezzanine interface muxing, and high-speed test equipment requiring stable component supply across extended temperature ranges.

Supply support for 74CBTLV3257DS,118 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert delivering high-performance, reliable components for automotive, industrial, and consumer applications - with leadership in logic, MOSFETs, and ESD protection.

The 74CBTLV3257 belongs to Nexperia's advanced CBTLV (Configurable Bus Transceiver Low-Voltage) logic family, designed specifically for low-voltage, high-speed signal routing in noise-sensitive and thermally constrained embedded systems.

FAQ

What is the maximum recommended load capacitance for maintaining <0.25 ns propagation delay?

Per datasheet Table 11, the specified 0.25 ns max tpd is validated with 30 pF load capacitance at VCC = 2.3–2.7 V and 50 pF at VCC = 3.0–3.6 V. Exceeding these values increases RC delay linearly; for 100 pF loads, measured tpd rises to ~0.8 ns. Layout parasitics must be included in total CL budget.

Can OE be left floating during normal operation?

No - OE must be actively driven or pulled to VCC via a resistor (value determined by driver sink capability). Floating OE risks metastability, causing unpredictable switch states and potential bus contention. The datasheet explicitly recommends a pull-up to ensure high-impedance OFF-state during power-up/down sequences.

Does the 5 Ω ON resistance apply across the full –40 °C to +125 °C range?

No - 5 Ω is the typical value at Tamb = 25 °C and VCC = 3.3 V. At –40 °C, RON drops to ~4.0 Ω; at +125 °C, it rises to ≤15.0 Ω (per Table 8). Designers must use worst-case RON in thermal simulations for precision analog applications.

Is the SSOP16 package (SOT519-1) RoHS-compliant and lead-free?

Yes - all Nexperia 74CBTLV3257 variants, including 74CBTLV3257DS,118, are manufactured in full compliance with RoHS Directive 2011/65/EU and are lead-free. The SSOP16 package uses matte tin (Sn) termination finish and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1).