Nexperia USA Inc. CBT3253D,118

Overview

CBT3253D,118 from Nexperia is a dual 1-of-4 TTL-compatible FET multiplexer/demultiplexer in SO16 package, featuring 5 Ω ON-resistance, <0.25 ns propagation delay, and ±1 μA input leakage. It enables bidirectional signal routing between two independent A/B port sets under S0/S1 address control and active-low 1OE/2OE enables - used in high-speed digital bus switching and logic-level translation circuits.

For engineers reviewing the CBT3253D,118 datasheet, CBT3253D,118 pinout, CBT3253D,118 application, or CBT3253D,118 equivalent, key selection criteria include its 5 Ω switch R_ON, -40 °C to +85 °C industrial temperature range, overvoltage-tolerant 5.5 V control inputs, and SO16 footprint compatibility with legacy board layouts.

Technical Context

The CBT3253D implements two independent FET-based analog switches, each with four selectable B-port terminals (1B1–1B4, 2B1–2B4) routed to respective A-port channels (1A, 2A). Selection is controlled by synchronous 2-bit binary S0/S1 inputs, while 1OE and 2OE independently enable/disable each switch bank.

Each switch operates with minimal propagation delay (<0.25 ns), zero added ground bounce, and maintains high-impedance OFF-state when OE is HIGH - regardless of S0/S1 state. The device uses TTL-compatible input thresholds (V_IL ≤ 0.8 V, V_VIH ≥ 2.0 V) and supports 4.5 V to 5.5 V supply operation.

Key Specifications

Pinout & Package

CBT3253D,118 is housed in a plastic small outline package (SO16, SOT109-1) with 16 leads and 3.9 mm body width. Pin 1 is index-marked; pins are arranged in two rows with GND (pin 8) and V_CC (pin 16) positioned for optimal decoupling.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 1-of-4 FET multiplexer applications.

Compared with SN74CBT3253PWR and 74LVC1G3157GW, the CBT3253D,118 delivers superior speed (<0.25 ns vs. ≥3.5 ns), true dual-channel integration, and optimized 5 V performance - making it the preferred choice for industrial bus switching and PCIe lane management where timing margin is constrained.

Availability

CBT3253D,118 is available at Aetrix Electronics and suitable for PCI Express lane switching, industrial PLC bus routing, automated test equipment signal pathing, and digital audio stream selection requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CBT3253D,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 logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets - with focus on efficiency, miniaturization, and robustness.

The CBT3253 belongs to Nexperia's BiCMOS bus switch family, engineered specifically for high-speed, low-distortion digital signal routing in 5 V TTL environments - emphasizing minimal propagation delay, low ON-resistance, and industrial temperature resilience.

FAQ

What is the maximum continuous current per switch channel?

The CBT3253D,118 supports 128 mA continuous current per switch path, verified under absolute maximum ratings. This rating applies to each individual 1A↔1Bn or 2A↔2Bn connection when V_CC is within 4.5 V to 5.5 V and ambient temperature remains between -40 °C and +85 °C. Exceeding this current risks thermal overstress and permanent R_ON drift.

Can CBT3253D,118 operate with 3.3 V logic inputs while powered at 5 V?

Yes - the control inputs (S0, S1, 1OE, 2OE) are overvoltage tolerant up to 5.5 V, allowing safe interface with 3.3 V logic even when V_CC = 5 V. Input thresholds remain valid (V_IL ≤ 0.8 V, V_VIH ≥ 2.0 V), and no external clamping or level-shifting circuitry is required for mixed-voltage operation.

Is the CBT3253D,118 pin-compatible with CBT3253PW?

Yes - both CBT3253D,118 (SO16/SOT109-1) and CBT3253PW (TSSOP16/SOT403-1) share identical pin numbering, function mapping, and electrical specifications. The only difference is package type: SO16 has 3.9 mm body width and 1.27 mm lead pitch, while TSSOP16 has 4.4 mm body width and 0.65 mm pitch - requiring separate PCB footprints.

Does CBT3253D,118 support hot-swap or live-insertion?

No - the CBT3253D,118 lacks explicit hot-swap protection features such as power-on reset, slew-rate controlled outputs, or back-drive immunity. While its latch-up immunity (>100 mA) and ESD robustness improve ruggedness, uncontrolled insertion into a live 5 V bus may cause transient glitches or momentary contention. System-level protection (e.g., series resistors, soft-start sequencing) is recommended.