Diodes Incorporated PI5A4599BCEX

Overview

PI5A4599BCEX from Diodes Incorporated is a single-pole double-throw (SPDT) CMOS analog switch with rail-to-rail signal handling, 8 Ω on-resistance at 3.0 V, 350 MHz bandwidth, break-before-make switching, and operation from 1.65 V to 6.0 V supply. It serves as a low-delay bus or analog signal path in portable audio and instrumentation interfaces.

For engineers reviewing the PI5A4599BCEX datasheet, PI5A4599BCEX pinout, PI5A4599BCEX application, or PI5A4599BCEX equivalent, key selection criteria include on-resistance flatness over voltage range, −63 dB off-isolation at 10 MHz, 2 ns transition speed at 5.0 V, and SC70-6 (C6) package compatibility with high-density portable PCB layouts.

Technical Context

The PI5A4599BCEX implements a CMOS transmission gate architecture with independent logic-level control input (IN), enabling operation across 1.65–6.0 V supplies while maintaining rail-to-rail analog signal swing between COM, NC, and NO terminals. Its break-before-make timing (≥0.5 ns) prevents momentary shorting during state transitions.

It delivers 350 MHz −3 dB bandwidth and <5 pC charge injection, supporting high-fidelity analog switching in audio paths and low-jitter digital bus routing. Off-isolation exceeds −82 dB at 1 MHz, and crosstalk remains below −82 dB, ensuring channel integrity in multi-signal routing applications.

Key Specifications

Pinout & Package

Supplied in a Pb-free, RoHS-compliant SC70-6 (C6) package measuring 2.0 mm × 1.25 mm × 0.95 mm, with 0.65 mm lead pitch and thermal pad omitted.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SPDT analog switch applications.

Compared with TMUX1574RSE and ADG849YRMZ, the PI5A4599BCEX offers the widest supply range (1.65–6.0 V), highest bandwidth (350 MHz), and guaranteed break-before-make timing-making it optimal for battery-voltage-scalable portable designs requiring fast, clean signal routing without external timing control.

Availability

PI5A4599BCEX is available at Aetrix Electronics and suitable for portable instrumentation, USB peripheral switching, and low-power sensor interface applications requiring stable component supply across extended temperature and voltage ranges.

Supply support for PI5A4599BCEX 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.

The PI5A4599BCEX belongs to Diodes' Pericom analog switch product line, engineered specifically for high-fidelity, low-power signal routing in space-constrained portable electronics where supply voltage scalability and signal integrity are critical.

FAQ

What is the maximum allowable signal voltage swing for the PI5A4599BCEX?

The device supports rail-to-rail analog signal operation: the input voltage at COM, NC, or NO pins may range continuously from GND to V+, provided V+ is within 1.65 V to 6.0 V. This allows full utilization of supply rails without clipping, even at minimum 1.65 V operation, and eliminates need for external clamping diodes in most portable designs.

Does the PI5A4599BCEX require external pull-up or pull-down resistors on the IN pin?

No. The IN pin has CMOS-compatible input thresholds that scale with V+: VIH is ≥1 V at 1.65 V supply and ≥1.8 V at 5.5 V supply, while VIL is ≤0.4 V at 1.65 V and ≤1.2 V at 5.5 V. Floating IN is prohibited per datasheet, but no external biasing is needed-direct connection to microcontroller GPIO or logic buffers suffices.

Can the PI5A4599BCEX be used in bidirectional signal paths such as I²C or UART?

Yes. Its symmetrical ON resistance and matched capacitance (15 pF COM ON, 5 pF NC/NO OFF) support true bidirectional operation. It has been validated for I²C clock/data lines (up to 400 kHz standard mode) and low-speed UART (≤1 Mbps), provided trace lengths remain short (<10 cm) and load capacitance stays below 35 pF to maintain rise/fall time integrity.

How does the PI5A4599BCEX handle power sequencing when V+ ramps before or after logic control?

The IN pin is supply-voltage-independent: it functions correctly whether V+ is applied before, after, or simultaneously with the logic signal. With V+ = 0 V, IN leakage is ±0.1 µA; with V+ applied, input thresholds track V+, preventing unintended switching during brown-out or hot-plug conditions-critical for battery-backed systems with asymmetric power-up sequences.