74VHC4051AFT

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74VHC4051AFT

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IC MUX/DEMUX 8X1 16TSSOP

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Specifications

Attribute Value
Supplier Toshiba Semiconductor and Storage
Package / Case Tape & Reel (TR),Cut Tape (CT)
Part Status Active
Multiplexer / Demultiplexer Circuit 8:1
Number of Circuits 1
On - State Resistance(Max) 37Ohm
Channel - to - Channel Matching(ΔRon) 5Ohm
Voltage - Supply, Single (V+) 2V ~ 5.5V
Switch Time(Ton Toff)(Max) 12ns, 12ns
-3 dB Bandwidth 180MHz
Channel Capacitance(CS(off)CD(off)) 0.5pF, 23.4pF
Current - Leakage(IS(off))(Max) 100nA
Crosstalk -45dB @ 1MHz
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount

Overview

Description

The 74VHC4051AFT is an 8-channel analog multiplexer/demultiplexer in the 74VHC family. It uses three binary select inputs (S1, S2, S3) plus an Inhibit (INH) input to connect one of eight bidirectional channels (X0–X7) to a single common terminal (Z). When INH is low and a channel is selected, signals pass between the common line and that channel; when INH is high, all channels are isolated. Operates from a 2–6 V supply (CMOS levels) and supports analog signals within GND to VCC. Typical on-resistance is tens to a few hundred ohms (depends on Vcc and channel), with very low off leakage. It’s commonly used to multiplex sensors, ADC inputs, audio or other analog/digital signals in mixed-signal systems. The “AFT” suffix denotes a specific vendor packaging variant; check the datasheet for exact pinout and packing.

Equivalent

Equivalent parts to 74VHC4051AFT (8-channel analog multiplexer/demultiplexer):
- 74HC4051
- 74HCT4051
- CD4051B (CD4000 CMOS family)
- LF4051 / LF4051B (Fairchild)
- MC14051B (Motorola/On Semiconductor)
Note: these chips are functionally the same but choose one with the same supply voltage and signal ranges as your design (e.g., 2–6 V for VHC, etc.).

Features

Key features of the 74VHC4051AFT (8-channel analog multiplexer/demultiplexer):
- 8-channel multiplexer/demultiplexer with a single common I/O (COM)
- 3 select inputs (S1, S2, S3) plus an enable input (E)
- Break-before-make switching; low on-resistance (typical ~125 Ω at Vcc = 5 V)
- Wide supply range: Vcc = 2.0 V to 6.0 V
- Analog signal range up to Vcc (single-supply operation)
- Off-state leakage typically in the sub-μA range; low crosstalk
- CMOS technology: low static/dynamic power; TTL/CMOS input compatible
- Fast, predictable switching suitable for analog routing
- ESD protection and robust operation within rail limits
- Package options: 16-pin devices; AFT suffix indicates packaging variant (e.g., tape-and-reel)
Note: Exact parameters (Ron, leakage, ac characteristics) vary by vendor and process; consult the specific datasheet for precise numbers.

Pinout

- Pin count: 16 pins (DIP16/SO16/TSSOP16 variants).
- Function: 8-channel analog multiplexer/demultiplexer (8:1). A single common I/O pin connects to one of eight input/output pins (Y0–Y7) based on the 3 select inputs (A, B, C). Includes an INH (inhibit) input to disable all channels. Suitable for routing analog or digital signals within the supply voltage range (VCC).

Manufacturer

- Manufacturer: Nexperia.
- About the company: Nexperia is a global semiconductor company that designs and manufactures standard logic, analog/mixed-signal ICs, discretes and related components (e.g., ESD protection). It originated from Philips/NXP’s semiconductor business and is headquartered in the Netherlands.

Application

74VHC4051AFT is an 8-channel analog multiplexer/demultiplexer. It selects one of eight analog inputs to a common output (or vice versa) under three select lines. Common application areas:
- Data acquisition and instrumentation (multiplexing several sensors into one ADC/DAC)
- Sensor interfacing and MCU I/O expansion
- Audio/video signal routing and switching
- Programmable analog signal routing in consumer electronics
- Automotive/industrial control signal multiplexing
- Test equipment and signal routing (oscilloscopes, bench gear)
- Medical instrumentation for multiplexed sensor signals

Package

16-pin surface-mount package (SOP/SOIC), typically the TSSOP-16 variant.

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