Diodes Incorporated PI3B3253ZHDEX

Overview

PI3B3253ZHDEX from Diodes Incorporated is a 3.3V dual 4:1 multiplexer/demultiplexer with near-zero propagation delay (0.25 ns typ.), 5 Ω on-resistance, and ultra-low quiescent current (0.1–3.0 µA). It provides Hi-Z outputs, rail-to-rail logic-compatible control inputs, and operates across –40°C to +85°C for notebook and portable computing signal routing.

For engineers reviewing the PI3B3253ZHDEX datasheet, PI3B3253ZHDEX pinout, PI3B3253ZHDEX application, or PI3B3253ZHDEX equivalent, key selection criteria include low on-resistance switching, sub-1 ns bus select timing, 3.3V-only supply compatibility, and UQFN3030-16 (ZHD) package thermal and layout constraints.

Technical Context

The PI3B3253ZHDEX implements two independent 4:1 analog/digital bus switches using CMOS transmission-gate architecture, enabling bidirectional signal flow between four input pairs (IA0–IA3, IB0–IB3) and two outputs (YA, YB) under dual 2-bit select (S0/S1) and enable (EA/EB) control. Each switch exhibits symmetrical on-resistance and minimal charge injection.

Its logic inputs tolerate up to +3.6V regardless of VCC = 3.3V ±10%, supporting mixed-voltage interfacing. The device draws only 0.2 µA typical quiescent current and features no ground bounce or propagation delay beyond RC time constant (RON × CL), validated at CL = 50 pF and RL = 500 Ω.

Key Specifications

Pinout & Package

PI3B3253ZHDEX is packaged in a 16-pin UQFN3030-16 (ZHD) footprint measuring 3.0 mm × 3.0 mm × 0.55 mm, with wettable flank leads for automated optical inspection and enhanced solder joint reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 4:1 analog bus switch applications.

Compared with TS3A4751PWR and SN74CBT3253PWR, PI3B3253ZHDEX delivers optimal balance of dual-channel integration, 5 Ω RON, and 0.25 ns propagation delay-making it preferred for compact, high-speed 3.3V portable electronics where board space and timing margin are constrained.

Availability

PI3B3253ZHDEX is available at Aetrix Electronics and suitable for notebook I/O routing, USB 2.0 switching, embedded display interface, and industrial sensor hub applications requiring stable component supply and RoHS-compliant UQFN packaging.

Supply support for PI3B3253ZHDEX 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-performance, energy-efficient solutions for consumer, computing, industrial, and automotive markets.

The PI3B3253 belongs to Diodes' NanoSwitch™ portfolio, engineered specifically for low-latency, low-power signal routing in portable computing and high-density embedded systems where minimal propagation delay and ultra-low standby current are critical.

FAQ

What is the maximum signal frequency supported by PI3B3253ZHDEX?

The PI3B3253ZHDEX supports DC to >200 MHz operation, verified by its 0.25 ns propagation delay and 36 pF CON (on-capacitance). At 480 Mbps (USB 2.0), it maintains signal integrity with <0.5 dB insertion loss and meets eye diagram mask requirements per USB-IF test plans when used with proper 50 Ω termination.

Can PI3B3253ZHDEX operate with 5V logic control signals?

No-its logic inputs (S0, S1, EA, EB) are rated for –0.5V to +4.6V absolute maximum, but the device requires VCC = 3.3V ±10% and is not 5V-tolerant in functional operation. Driving control pins above VCC + 0.3V risks latch-up or increased ICC. For 5V logic compatibility, SN74CBT3253PWR is recommended.

Is PI3B3253ZHDEX suitable for analog sensor multiplexing?

Yes-its 5 Ω RON, 3.0 pF CIN, and <10 pC charge injection enable accurate DC-coupled analog multiplexing of low-impedance sensors (e.g., RTDs, bridge transducers). Channel-to-channel crosstalk is –65 dB at 1 MHz, and THD remains <–90 dB for 1 V_PP signals at 10 kHz, meeting Class I industrial sensor accuracy requirements.

Does PI3B3253ZHDEX require external pull-up or pull-down resistors on control pins?

No-internal weak pull-downs on EA/EB and internal weak pull-ups on S0/S1 ensure defined logic states during power-up or floating conditions. External resistors are unnecessary unless specific timing sequencing (e.g., hold EA low until VCC stabilizes) is required by system-level reset architecture.