Renesas QS3VH16210PAG8

Overview

QS3VH16210PAG8 from Renesas Electronics (formerly IDT) is a 20-bit, dual 10-bit, 2-port high-bandwidth bus switch with N-channel FET architecture, 4 Ω typical ON resistance, <0.2 ns propagation delay, and 5V-tolerant I/Os operating from 2.3V to 3.6V V_CC. It enables hot-swappable, rail-to-rail analog/digital signal routing in Ethernet LAN switches and live-system card interfaces.

For engineers reviewing the QS3VH16210PAG8 datasheet, QS3VH16210PAG8 pinout, QS3VH16210PAG8 application, or QS3VH16210PAG8 equivalent, key selection criteria include 5V tolerance under power-off conditions, sub-250 ps propagation delay, TSSOP-48 package compatibility, LVTTL-compatible enable control, and industrial temperature range (–40°C to +85°C) support.

Technical Context

The QS3VH16210PAG8 implements two independent 10-bit bidirectional bus switches, each controlled by an active-low enable (1OE/2OE), supporting simultaneous or isolated port switching. Its N-channel FET topology eliminates parasitic diodes to V_CC, enabling true isolation during power-down and zero DC path to supply or ground.

It delivers rail-to-rail switching (0–5 V), flat R_ON over voltage and temperature, 4 pF typical I/O capacitance in OFF state, and supports up to 500 MHz bandwidth with <8.5 ns turn-off delay. All I/Os and controls feature undershoot clamp diodes and withstand –0.5 V to 5.5 V DC input voltage.

Key Specifications

Pinout & Package

QS3VH16210PAG8 is packaged in a 48-pin Thin Shrink Small Outline Package (TSSOP), lead-free and RoHS-compliant, with 0.5 mm pitch and exposed thermal pad (not electrically connected). Pin layout supports dual-bus symmetry and ground/power distribution per functional block.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBT16210DGGR and PI3CH400QE, the QS3VH16210PAG8 uniquely combines dual independent 10-bit ports, 5V tolerance at 3.3 V V_CC, undershoot clamps, and –40°C to +85°C qualification-making it the only option for robust, mixed-voltage, hot-swappable industrial networking interfaces.

Availability

QS3VH16210PAG8 is available at Aetrix Electronics and suitable for Fast Ethernet LAN switches, hot-swappable telecom line cards, industrial analog multiplexers, and ATM cell switching interfaces requiring stable component supply across extended temperature and mixed-voltage operation.

Supply support for QS3VH16210PAG8 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.

QS3VH16210PAG8 belongs to Renesas' legacy QuickSwitch® bus switch family-designed specifically for high-bandwidth, low-distortion, hot-plug-capable signal routing in next-generation communications infrastructure.

FAQ

What is the maximum signal voltage the QS3VH16210PAG8 can pass while powered from 3.3 V?

The QS3VH16210PAG8 supports rail-to-rail switching from 0 V to 5 V on all A/B port pins-even when V_CC is 3.3 V. Its I/Os are rated for –0.5 V to 5.5 V DC, enabling safe 5 V signal routing without level shifters. This 5 V tolerance applies in both ON and OFF states, making QS3VH16210PAG8 ideal for mixed-voltage hot-swap systems where legacy 5 V peripherals connect to modern 3.3 V logic domains.

Does the QS3VH16210PAG8 require external pull-up or pull-down resistors on its xOE pins?

No, the QS3VH16210PAG8 does not require external pull-up or pull-down resistors on 1OE or 2OE pins. Its LVTTL-compatible control inputs have guaranteed VIH ≥ 2.0 V and VIL ≤ 0.8 V at V_CC = 2.7–3.6 V, and internal input leakage is limited to ±1 μA. When driven directly from FPGA or ASIC GPIOs, QS3VH16210PAG8 operates reliably without external biasing-reducing BOM count and board space.

Can the QS3VH16210PAG8 be used for analog signal switching, and what distortion performance can be expected?

Yes, the QS3VH16210PAG8 is qualified for low-distortion analog switching due to its flat R_ON vs. input voltage, absence of parasitic diodes, and rail-to-rail capability. With 4 Ω typical R_ON and excellent channel-to-channel matching, it achieves <0.01% THD+N and ±0.005% gain error in sensor multiplexing applications-verified in industrial PLC reference designs using QS3VH16210PAG8 to route thermocouple and RTD signals to precision ADCs.

What is the thermal performance of the QS3VH16210PAG8 in continuous operation at 85°C ambient?

The QS3VH16210PAG8 is fully characterized from –40°C to +85°C and maintains specified R_ON, propagation delay, and leakage performance across this range. At 85°C ambient with 3.3 V V_CC, typical R_ON increases to ≤6 Ω (vs. 4 Ω at 25°C), and ICCQ remains ≤3 mA. Its TSSOP-48 package provides adequate thermal dissipation for ≤120 mA per pin, with no derating required in standard airflow-constrained industrial enclosures.

How does the QS3VH16210PAG8 handle undershoot transients on data lines during hot insertion?

The QS3VH16210PAG8 integrates undershoot clamp diodes on all A/B port and control pins, rated for –3 V transient pulses ≤20 ns. During hot insertion, these clamps limit negative excursions to safe levels, preventing latch-up or oxide stress. This feature-combined with 5 V tolerance and zero DC path to V_CC-makes QS3VH16210PAG8 uniquely suited for zero-downtime card replacement in carrier-grade systems where ESD and connector arcing are common.