Renesas QS3L384PAG8

Overview

QS3L384PAG8 from Renesas Electronics (formerly IDT) is a high-speed, low-power 10-bit CMOS bus exchange switch with dual 5-bit bus enable control, 5 Ω typical ON resistance, zero added propagation delay, and 0.2 μA typical quiescent current. It operates across –40°C to +85°C and supports hot-swapping and voltage translation between 5 V and 3.3 V buses.

For engineers reviewing the QS3L384PAG8 datasheet, QS3L384PAG8 pinout, QS3L384PAG8 application, or QS3L384PAG8 equivalent, key selection criteria include bidirectional switching capability, undershoot clamp diodes on all I/O and control pins, industrial temperature rating, QSOP-24 package compatibility, and TTL-compatible logic thresholds for BEA/BEB enables.

Technical Context

The QS3L384PAG8 implements ten independent N-channel FET switches without inherent body diodes to V_CC, enabling true bidirectional signal flow with no DC path leakage. Its architecture uses two separate enable inputs (BEA, BEB) to independently control A0–A4/B0–B4 and A5–A9/B5–B9 groups.

Switching is governed by TTL-compatible control thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2 V), and the device maintains Hi-Z isolation with ±0.01 μA off-state current. Pass voltage is specified at 3.7–4.2 V under 5 V V_CC, confirming rail-to-rail signal integrity for 5 V-tolerant 3.3 V systems.

Key Specifications

Pinout & Package

QS3L384PAG8 is packaged in a 24-pin QSOP (Quarter Size Outline Package), 3.9 mm width, with standard JEDEC MO-137AC footprint and lead pitch of 0.635 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBT3384CPWR and 74LVC1G3157GW, the QS3L384PAG8 delivers lower ON resistance, integrated dual-enable segmentation, and system-level transient protection-making it optimal for industrial hot-swap and mixed-voltage bus management where signal fidelity and robustness are prioritized over package size or single-channel flexibility.

Availability

QS3L384PAG8 is available at Aetrix Electronics and suitable for hot-swapping systems, voltage translation interfaces, and power-conservation designs requiring stable component supply across industrial temperature ranges and long-term production cycles.

Supply support for QS3L384PAG8 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 QS3L384PAG8 belongs to Renesas' QuickSwitch® bus switch product line, engineered specifically for high-fidelity, low-latency, and robust signal routing in mixed-voltage industrial and communications systems.

FAQ

What is the maximum operating voltage for QS3L384PAG8?

The QS3L384PAG8 supports an absolute maximum supply voltage (V_TERM) of –0.5 V to +7 V on all terminals except V_CC, and V_CC is rated for 5 V ±5%. This allows safe operation with transient overshoot up to +7 V and undershoot down to –0.5 V, making QS3L384PAG8 suitable for noisy industrial environments where voltage excursions may occur.

Does QS3L384PAG8 support hot-plug operation?

Yes, QS3L384PAG8 is explicitly designed for hot-swapping and hot-docking applications. Its enhanced N-channel FET structure eliminates inherent diodes to V_CC, and undershoot clamp diodes on all I/O and control pins protect against negative transients during insertion. These features ensure QS3L384PAG8 prevents back-driving and latch-up when used in live backplane or modular card systems.

What is the function of BEA and BEB pins on QS3L384PAG8?

BEA and BEB are independent TTL-compatible enable inputs on QS3L384PAG8. BEA controls the lower 5-bit segment (A0–A4 ↔ B0–B4), while BEB controls the upper 5-bit segment (A5–A9 ↔ B5–B9). Both require a HIGH logic level (≥2 V) to activate conduction. This dual-enable architecture allows granular bus segmentation-enabling QS3L384PAG8 to isolate portions of a 10-bit bus without affecting others.

Can QS3L384PAG8 be used for 3.3 V to 5 V level translation?

QS3L384PAG8 supports bidirectional voltage translation when V_CC = 5 V, but its pass voltage specification (3.7–4.2 V) confirms reliable high-level transmission from 3.3 V logic to 5 V receivers. However, it does not actively shift logic thresholds-so 3.3 V outputs remain at ~3.3 V on the 5 V side. For full bidirectional translation, external pull-ups or receiver tolerance must be verified. QS3L384PAG8 is optimized for 5 V→3.3 V translation with guaranteed margins.

What package type is used for QS3L384PAG8?

QS3L384PAG8 uses a 24-pin QSOP (Quarter Size Outline Package) with green RoHS-compliant finish. The "PAG" suffix in the part number explicitly denotes this QSOP-24 variant. It has a 3.9 mm body width, 0.635 mm lead pitch, and meets JEDEC MO-137AC mechanical standards-ensuring compatibility with standard surface-mount assembly processes and reflow profiles.