QS3VH257QG

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QS3VH257QG

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QS3VH257 - QUICKSWITCH 2.5V/3.3V

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Spezifikationen

Attribut Wert
Supplier Rochester Electronics, LLC
Package / Case Bulk
Series 3VH
Part Status Active
Type Bus Switch
Circuit 4 x 2:1
Independent Circuits 1
Voltage Supply Source Single Supply
Voltage - Supply 2.3V ~ 3.6V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount

Übersicht

Description

QS3VH257QG is likely a part number for a quad 2-input multiplexer with tri-state outputs (a VH-family device, e.g., TI SN74VH257). It provides four independent 2:1 multiplexers with a common select input and a global enable to tri-state all outputs. Typical uses include routing data on a digital bus, interfacing a microprocessor to peripherals, and general data multiplexing in digital circuits. Key features often include CMOS/TTL-compatible inputs, four outputs (Y0–Y3), a common select input, and an enable input; operating in the VH voltage range (about 4.5–5.5 V) depending on the manufacturer.
Note: exact specs and packaging depend on the manufacturer. If you share the vendor (TI, NXP, etc.) or a datasheet link, I can tailor the intro with precise electrical characteristics and pinout.

Equivalent

QS3VH257QG is a quad 2-to-1 data selector with 3-state outputs (74xx257 family). Equivalents include:
- TI: SN74VHC257, SN74VH257, SN74LVC257
- NXP/ON Semiconductor: 74HC257, 74HCT257
- 74LS257, 74LVC257
Note: for a drop-in replacement, verify voltage range, package/pinout, and timing in the datasheet or distributor cross-reference.

Features

QS3VH257QG is a TI/74VHx family device: Quad 2-input multiplexer with 3-state outputs. Key features include:
- Quad 2-input multiplexers with a common select input
- 3-state outputs (tri-statable via an enable input)
- 4.5–5.5 V supply range (5 V nominal)
- VH family: high-speed CMOS performance
- Low static power consumption
- TTL/CMOS input level compatibility
- Input protection/ESD protection on inputs
- Pin-for-pin compatibility within the 74VH257 family
(Refer to the exact datasheet for propagation delays, drive strength, and package details.)

Pinout

- Pin count: 20 pins (DIP-20 / SO-20).
- Function: Quad 2-input multiplexer with 3-state outputs (A0–A3 or B0–B3 selected via a common S; outputs Y0–Y3; OE is typically active-low to enable/tri-state the outputs).

Application

QS3VH257QG is a quad 2-input multiplexer with tri-state outputs (high-speed CMOS). Key applications include:
- Data routing on shared buses in microprocessors/DSPs (selecting between two sources per line).
- Memory and I/O interfaces, including address/data multiplexing and bus isolation.
- Digital signal processing boards and test equipment for multiplexing signals.
- Video/audio/data switching in consumer electronics.
- General-purpose logic for controlled data selection and bus-compatible gating.

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