Diodes Incorporated PI5C32X384B

Overview

PI5C32X384B from Pericom Semiconductor is a 20-bit, 2-port CMOS bus switch with four independent bus enable controls, 5Ω typical on-resistance, near-zero propagation delay (0.25 ns), and ultra-low quiescent current (0.1 µA typical). It enables direct, low-noise signal routing between two 10-bit buses in notebook and portable computing systems.

For engineers reviewing the PI5C32X384B datasheet, PI5C32X384B pinout, PI5C32X384B application, or PI5C32X384B equivalent, key selection criteria include its dual 10-bit bus partitioning, independent BE control per segment, 5V operation, BQSOP-48 package footprint, and high-impedance isolation during disable.

Technical Context

The PI5C32X384B implements four independent 5-bit bidirectional analog switches-two per 10-bit bus-with separate active-low Bus Enable (BEA, BEB, BEC, BED) inputs. Each switch pair connects A-side and B-side signals only when its corresponding BE is LOW, otherwise presenting Hi-Z isolation.

Its architecture avoids added propagation delay beyond RC time constant (RON × CL), delivering sub-nanosecond timing integrity. The device operates at VCC = 5V ±5%, supports input/output voltage ranges from –0.5V to +7.0V, and maintains <0.1 µA ICC across –40°C to +85°C ambient.

Key Specifications

Pinout & Package

PI5C32X384B is housed in a 48-pin 150-mil wide plastic BQSOP (Body Quad Small Outline Package), with 0.5 mm lead pitch, gull-wing leads, and Pb-free/Green compliant construction.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 20-bit bus switch applications.

Compared with PI5C32X384A and SN74CBT3244PWR, the PI5C32X384B uniquely combines compact BQSOP-48 packaging, four independent BE controls, and 5Ω RON in a single 20-bit solution-reducing component count and layout overhead in portable and space-constrained designs.

Availability

PI5C32X384B is available at Aetrix Electronics and suitable for mobile computing, industrial I/O modules, and automated test equipment requiring stable component supply, long-term lifecycle support, and Pb-free compliance.

Supply support for PI5C32X384B 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

Pericom Semiconductor was a fabless provider of high-speed interface and signal integrity solutions, acquired by Diodes Incorporated in 2016; its legacy bus switch portfolio remains widely deployed in computing and communications infrastructure.

The PI5C32X384B belongs to Pericom's PI5Cxx series of low-RON CMOS bus switches, engineered specifically for low-latency, low-power signal routing in portable and embedded systems where timing integrity and battery efficiency are critical.

FAQ

What is the maximum operating temperature range for PI5C32X384B?

The PI5C32X384B is rated for ambient operation from –40°C to +85°C with power applied. Its storage temperature range extends from –65°C to +150°C. These limits are validated per JEDEC JESD78 and apply to continuous operation under specified VCC and loading conditions.

Can PI5C32X384B operate with 3.3V logic levels?

Yes - although optimized for 5V ±5% VCC, the PI5C32X384B accepts input voltages from –0.5V to +7.0V on all pins. Its VIH (2.0V min) and VIL (0.8V max) thresholds ensure reliable recognition of 3.3V logic levels when driven by compatible sources.

Does PI5C32X384B require external pull-up or pull-down resistors on BE pins?

No - the BE inputs have built-in hysteresis (5–7 mV) and TTL-compatible thresholds, allowing direct connection to microcontroller GPIO or FPGA outputs. External resistors are unnecessary unless system-level noise immunity requirements exceed the device's native noise margin.

Is PI5C32X384B pin-compatible with PI5C32X384C?

Yes - both share identical pinout, package dimensions, and electrical specifications. The 'C' suffix denotes enhanced ESD protection (±4 kV HBM), while the base PI5C32X384B meets standard JEDEC ESD requirements (±2 kV HBM); functionally interchangeable in most designs unless high-ESD environments are present.