Nexperia USA Inc. CBT3253PW,112

Overview

CBT3253PW,112 from Nexperia is a dual 1-of-4 TTL-compatible FET multiplexer/demultiplexer in TSSOP16 package, featuring 5 Ω ON-resistance, <0.25 ns propagation delay, and ±1 μA input leakage. It operates from -40 °C to +85 °C at 4.5–5.5 V supply and enables bidirectional signal routing in high-speed digital logic interfaces.

For engineers reviewing the CBT3253PW,112 datasheet, CBT3253PW,112 pinout, CBT3253PW,112 application, or CBT3253PW,112 equivalent, key selection criteria include low ON-resistance for minimal signal degradation, TTL-level compatibility without level-shifting, overvoltage-tolerant control inputs up to 5.5 V, and high-impedance OFF-state isolation independent of select lines.

Technical Context

The CBT3253PW implements two independent 1-of-4 analog/digital switch paths using FET-based transmission gates, each controlled by shared S0/S1 select lines and dedicated OE pins (1OE, 2OE). Its TTL-compatible inputs accept 0.8 V/2.0 V thresholds and tolerate up to 5.5 V regardless of VCC.

Each switch path supports bidirectional operation with 18.6 pF on-state capacitance and 3.8–11.4 pF off-state capacitance, enabling low-distortion signal routing in bus multiplexing and data path switching applications where ground bounce and propagation delay must be minimized.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package (SOT403-1), 16 leads, body width 4.4 mm, lead pitch 0.65 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FET multiplexer/demultiplexer applications.

Compared with SN74CBT3253PWR and 74LVC1G3157GW, the CBT3253PW,112 uniquely delivers dual 1-of-4 switching, full industrial temperature support, and superior ESD robustness in a compact TSSOP16 footprint-making it optimal for space-constrained, high-reliability industrial multiplexing.

Availability

CBT3253PW,112 is available at Aetrix Electronics and suitable for PCI Express Gen1 routing, parallel port sharing, automated test equipment signal switching, and dual-processor debug interface applications requiring stable component supply across industrial temperature ranges.

Supply support for CBT3253PW,112 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 logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and consumer electronics.

The CBT3253 belongs to Nexperia's high-speed TTL-compatible logic family, designed specifically for low-latency, low-distortion signal routing in mixed-signal and digital interconnect applications where ground bounce and propagation delay must be minimized.

FAQ

What is the maximum allowable voltage on S0, S1, 1OE, and 2OE pins?

The control inputs are overvoltage tolerant up to 5.5 V regardless of VCC level, as confirmed in Table 4 (Limiting Values) and Section 2 of the datasheet. This allows safe interfacing with 5 V logic even when VCC is at minimum 4.5 V, eliminating need for external clamping or level translation.

Can CBT3253PW,112 operate bidirectionally between any A and B pin pair?

Yes - each switch path (1A↔1Bn and 2A↔2Bn) is fully bidirectional with symmetrical ON-resistance and capacitance. Signal flow direction is determined solely by external source/sink configuration, not internal architecture, as verified in Functional Description (Table 3) and Pin Description (Table 2).

Does the device require external pull-up or pull-down resistors on unused control inputs?

Yes - per Table 5 (Recommended Operating Conditions), all unused control inputs must be held at VCC or GND to prevent floating states that could cause partial conduction, increased ICC, or undefined switching behavior. This requirement is explicitly stated to ensure proper device operation.

How does the CBT3253PW,112 handle simultaneous enable of both banks with conflicting select codes?

Each bank operates independently: 1OE controls only 1A↔1Bn paths, and 2OE controls only 2A↔2Bn paths. Conflicting S0/S1 values have no effect - only the enabled bank responds to its select inputs. This isolation is defined in Section 1 (General Description) and Table 3 (Function Selection).