Renesas QS32XL384Q1G8

Overview

QS32XL384Q1G8 from Renesas Electronics is a high-speed CMOS 20-bit bus switch with TTL-compatible I/O, 5 Ω typical ON resistance, zero propagation delay, and industrial temperature range (–40°C to +85°C). It enables bidirectional signal routing between two 20-bit buses (A0–A19 and B0–B19) under four independent enable controls for hot-swapping, voltage translation (5V ↔ 3.3V), and bus isolation in embedded digital systems.

For engineers reviewing the QS32XL384Q1G8 datasheet, QS32XL384Q1G8 pinout, QS32XL384Q1G8 application, or QS32XL384Q1G8 equivalent, key selection criteria include verified 5 Ω R_ON, guaranteed sub-0.25 ns propagation delay ceiling, QVSOP-48 package compatibility, undershoot clamp diodes on all control inputs, and four discrete 5-bit enable groups supporting partial-bus gating.

Technical Context

The QS32XL384Q1G8 implements twenty independent N-channel FET switches without inherent body diodes to V_CC, enabling true bidirectional, rail-to-rail signal pass-through. Each switch group (five bits per BE input) operates with TTL-level control logic and supports DC input voltages from –0.5 V to +7 V.

It delivers zero ground bounce and no added propagation delay beyond RC time constant (R_ON × C_L), validated at CL = 50 pF. The device features undershoot clamp diodes on all control and switch terminals, and guarantees off-state leakage ≤ ±1 μA across the full industrial temperature range.

Key Specifications

Pinout & Package

QS32XL384Q1G8 is packaged in a 48-pin QVSOP (Quad Flat No-Lead, Very Small Outline Package) with 0.4 mm pitch, optimized for space-constrained PCB layouts and thermal performance in high-density digital systems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBT3244PWR and PI3CH480E, the QS32XL384Q1G8 uniquely combines 20-bit width, four independent 5-bit enables, industrial temperature qualification, and integrated undershoot protection-making it optimal for robust, segmented bus isolation in mission-critical embedded platforms.

Availability

QS32XL384Q1G8 is available at Aetrix Electronics and suitable for hot-swapping systems, voltage translation interfaces, and low-power mobile baseband designs requiring stable component supply and long-term industrial-grade availability.

Supply support for QS32XL384Q1G8 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

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, infrastructure, and IoT applications.

The QS32XL384Q1G8 belongs to Renesas' QuickSwitch® family of high-speed bus switches, engineered specifically for low-latency, low-noise digital interconnect in thermally demanding and electrically noisy environments.

FAQ

What is the maximum operating voltage for QS32XL384Q1G8?

The QS32XL384Q1G8 supports DC input voltages from –0.5 V to +7 V on all switch and control terminals, with V_CC specified at 5.0 V ±5%. This allows safe operation during 5V-to-3.3V translation and tolerates transient undershoot down to –0.5 V due to integrated clamp diodes-critical for hot-swap reliability in the QS32XL384Q1G8.

Does QS32XL384Q1G8 support bidirectional signal flow?

Yes, the QS32XL384Q1G8 implements twenty fully bidirectional CMOS FET switches with no inherent body diode to V_CC, enabling true rail-to-rail signal pass-through in either direction. Signals applied to A0–A19 appear at B0–B19 and vice versa when the corresponding BE input is asserted-verified in the functional block diagram and pin description of the QS32XL384Q1G8 datasheet.

How many enable inputs does QS32XL384Q1G8 have, and how are they assigned?

The QS32XL384Q1G8 has four dedicated Bus Enable inputs: BEA controls bits A0–A4/B0–B4, BEB controls A15–A19/B15–B19, BEC controls A5–A9/B5–B9, and BED controls A10–A14/B10–B14. This 5-bit segmentation enables precise power gating and partial-bus isolation-distinctive functionality confirmed in the FUNCTION TABLE and PIN DESCRIPTION sections for the QS32XL384Q1G8.

What package type is used for QS32XL384Q1G8?

The QS32XL384Q1G8 is supplied in a 48-pin QVSOP (Quad Flat No-Lead, Very Small Outline Package) with 0.4 mm lead pitch. This RoHS-compliant, green package provides high I/O density and thermal efficiency, and its pinout-including dual GND pins (12 and 24) and V_CC placement-is explicitly defined in the TOP VIEW diagram of the QS32XL384Q1G8 datasheet.

Is QS32XL384Q1G8 rated for industrial temperature operation?

Yes, the QS32XL384Q1G8 is fully characterized and guaranteed for operation from –40°C to +85°C, meeting industrial temperature requirements. This rating is stated in the device description, absolute maximum ratings table, and ordering information section-and applies across all electrical parameters including R_ON, propagation delay, and leakage current for the QS32XL384Q1G8.