Diodes Incorporated PI5C3305LEX

Overview

PI5C3305LEX from Diodes Incorporated is a 2-bit bus switch IC with two independent 5Ω low-on-resistance CMOS switches, active-HIGH individual enables (BE1/BE2), and near-zero propagation delay (0.25 ns). It provides direct A-to-B signal pass-through for high-speed digital buses in notebook and portable electronics, operating from 4V to 5.5V with ultra-low quiescent current (0.2 µA typical).

For engineers reviewing the PI5C3305LEX datasheet, PI5C3305LEX pinout, PI5C3305LEX application, or PI5C3305LEX equivalent, key selection criteria include on-resistance matching (4–7 Ω), bus disable time (≤4.9 ns), input hysteresis (250 mV), and TSSOP-8 packaging compatibility with space-constrained PCB layouts.

Technical Context

The PI5C3305LEX implements dual independent analog/digital bus switches using transmission-gate topology, enabling or isolating signal paths without level translation or logic inversion. Each switch features matched R_ON (4–7 Ω at V_CC = 4.5 V) and supports bidirectional signal flow between A and B terminals.

Its control architecture uses TTL-compatible enable inputs with 250 mV hysteresis to suppress noise-induced switching, and it maintains high-impedance isolation (±1 µA leakage) when disabled. The device draws only 0.1–3.0 µA quiescent supply current across –40°C to +85°C ambient.

Key Specifications

Pinout & Package

Package: 8-pin TSSOP (173-mil wide, Pb-free and RoHS-compliant, marking code "L")

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-bit bus switch applications.

Compared with SN74CBT3244PWR and 74LVC1G3157GW, the PI5C3305LEX uniquely delivers dual independent enables, 250 mV input hysteresis for noise immunity, and guaranteed ≤7 Ω R_ON in an 8-pin TSSOP-making it optimal for discrete 2-bit bus gating in portable systems.

Availability

PI5C3305LEX is available at Aetrix Electronics and suitable for notebook computing, USB docking stations, embedded controller debug interfaces, and PCIe lane multiplexing requiring stable component supply and RoHS-compliant sourcing.

Supply support for PI5C3305LEX 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 analog ICs, specializing in high-performance, energy-efficient components for computing, consumer, and industrial markets.

The PI5C3305LEX belongs to Diodes' high-speed bus switch product line, engineered specifically for low-latency, low-power signal routing in portable and space-constrained electronics.

FAQ

What is the maximum recommended operating voltage for PI5C3305LEX?

The absolute maximum supply voltage is +7.0 V, but the device is characterized and specified for reliable operation between 4.0 V and 5.5 V. Operating outside this range may cause excessive leakage, timing violations, or accelerated wear-out, especially at temperature extremes.

Does PI5C3305LEX support bidirectional signal flow?

Yes-each switch (A1↔B1 and A2↔B2) is fully bidirectional with no direction pin or internal logic. Signal integrity is preserved in both directions due to symmetric CMOS transmission-gate design and matched R_ON (4–7 Ω).

Is a pull-up resistor required on the BE pins?

Yes-a pull-up resistor is recommended on each BE pin for power-up protection, as the device defaults to high-impedance (disabled) when BE is floating. This prevents unintended signal coupling during system reset or brown-out conditions.

Can PI5C3305LEX be used in automotive applications?

No-the PI5C3305LEX is not AEC-Q100 qualified. Diodes Incorporated offers automotive-grade variants (e.g., PI5C3305Q) with PPAP documentation, IATF 16949 manufacturing, and extended temperature validation; consult your local Diodes representative for qualified alternatives.