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CD4051BM96

8:1 CMOS analog mux, 3-20V, 125Ω Ron, logic-level conv, SOIC-16

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Manufacturer Part：

CD4051BM96

Package：

SOIC-16 (9.9 x 3.9 x 1.58mm, 1.27mm pitch)

Brand：

Product Categories：

Integrated Circuits ICs, Interface ICs

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Description

Product Overview

The CD4051BM96 is a CMOS single 8-channel analog multiplexer/demultiplexer from Texas Instruments with logic-level conversion, 125Ω on-resistance, and break-before-make switching in a SOIC-16 package.

Key Specifications

Configuration	8:1 single-channel multiplexer/demultiplexer
Supply Voltage (VDD)	3V to 20V
Analog Signal Range	Up to 20Vp-p (VDD to VEE)
Dual Supply Range	±3V to ±10V
On-Resistance	125Ω typical at VDD=15V
On-Resistance Match	5Ω typical between channels at VDD=15V
Off-State Leakage	±10pA typical at VDD=15V, 25°C
Quiescent Power	0.2µW typical at VDD=10V
Switching	Break-before-make
Signal Path	Bidirectional
ESD Rating	3000V HBM, 2000V CDM
Operating Temperature	-55°C to +125°C
Package	SOIC-16 (9.9 x 3.9mm)

Features

8-channel multiplexer with 3-bit binary address selection
Wide analog signal range: up to 20Vp-p
Low on-resistance: 125Ω typical at 15V
Extremely low off-state leakage: ±10pA typical
Bidirectional signal path for mux/demux operation
Logic-level conversion between digital and analog supplies
INH input disables all channels simultaneously
Break-before-make switching prevents channel shorting
Ultra-low quiescent power: 0.2µW typical

Applications

Analog and digital signal multiplexing
A/D and D/A converter channel selection
Signal gating and routing
Data acquisition systems
Factory automation and process control

Product Introduction:CD4051BM96 Product Introduction

The CD4051BM96 from Texas Instruments is a CMOS single 8-channel analog multiplexer/demultiplexer with logic-level conversion capability. Three binary address inputs (A, B, C) select one of eight channels to connect to the common output. An inhibit (INH) input disables all channels when high. The device supports analog signals up to 20Vp-p, with the analog range determined by VDD (positive supply) and VEE (negative supply). When VDD=+5V and VEE=-13.5V, analog signals from -13.5V to +5V can be controlled by 0V to 5V digital inputs, providing logic-level conversion. The 125Ω on-resistance at VDD=15V is matched to within 5Ω between channels, ensuring consistent signal transfer. The break-before-make switching prevents momentary shorting between channels during switching. The bidirectional signal path allows use as either a multiplexer (8 inputs to 1 output) or demultiplexer (1 input to 8 outputs). The M96 suffix denotes the SOIC-16 package with tape-and-reel packaging.

Working Principle:CD4051BM96 Working Principle

The CD4051BM96 uses internally decoded CMOS transmission gates to connect the selected channel to the common terminal. Each channel consists of a parallel n-channel and p-channel MOSFET pair (transmission gate) that provides bidirectional conduction when both MOSFETs are turned on. The 3-bit binary address (A, B, C) is decoded by internal logic to select one of eight channels; when the selected channel’s transmission gate is enabled, the n-channel and p-channel MOSFETs both conduct, creating a low-impedance path (125Ω typical at 15V) between the channel I/O and the common terminal. The parallel n/p structure ensures a relatively flat on-resistance over the full analog signal range. When the INH pin is high, all transmission gates are disabled, and all channels present high impedance. The break-before-make circuit ensures that the previously selected channel turns off before the newly selected channel turns on, preventing momentary crosstalk between channels. The logic-level conversion works because the digital inputs are referenced to VDD-VSS while the analog switches operate between VDD-VEE; the internal level-shifting circuitry translates the digital control signals to the appropriate gate drive voltages for the transmission gates.

Pin Description:CD4051BM96 Pin Definition and Functions

Pin	Name	Type	Description
1	CH4	I/O	Channel 4 input/output
2	CH6	I/O	Channel 6 input/output
3	COM	I/O	Common output/input
4	CH7	I/O	Channel 7 input/output
5	CH5	I/O	Channel 5 input/output
6	INH	Input	Inhibit (high = all channels off)
7	VEE	Power	Negative analog supply
8	VSS	Power	Ground (digital reference)
9	C	Input	Address bit C (MSB)
10	B	Input	Address bit B
11	A	Input	Address bit A (LSB)
12	CH3	I/O	Channel 3 input/output
13	CH0	I/O	Channel 0 input/output
14	CH1	I/O	Channel 1 input/output
15	CH2	I/O	Channel 2 input/output
16	VDD	Power	Positive supply (3V to 20V)

Application Scenarios:In which products and applications isCD4051BM96 used

Data Acquisition: 8-channel mux selects one of 8 sensors for a single ADC input, reducing ADC count and cost
Signal Routing: Bidirectional path and INH pin enable flexible signal routing in test and measurement equipment
Level Conversion: VEE=-13.5V allows switching bipolar analog signals with unipolar (0-5V) digital control
Process Control: 0.2µW quiescent power and ±10pA leakage suit battery-powered field instruments
Audio Switching: 5Ω Ron match and -50dB crosstalk (at 8MHz) provide clean channel switching for audio routing

Alternative Models:What chips are recommended as replacements for CD4051BM96

Model	Manufacturer	Key Difference	Package	Supply
CD4051BM	TI	SOIC-16 surface-mount version with identical logic function and 3-18V range	SOIC-16	3-18V
CD4051BE	TI	Through-hole DIP version for prototyping and legacy board repair	DIP-16	3-18V
HEF4051BT	NXP	Pin-compatible CMOS version with improved ESD protection and 3-15V supply	SOIC-16	3-15V
MC144051BDR2G	onsemi	Pin-compatible equivalent with RoHS compliance and AEC-Q100 automotive option	SOIC-16	3-18V
74HC4051D	TI/Nexperia	HC CMOS version with higher speed and 2-6V supply for modern logic systems	SOIC-16	2-6V
74HC4051N	TI/Nexperia	HC CMOS through-hole version for prototyping with 2-6V supply range	DIP-16	2-6V
74HCT4051D	Nexperia	HCT version with TTL-compatible inputs for mixed 5V TTL/CMOS systems	SOIC-16	4.5-5.5V

CD4051 is the CMOS 4000-series 8-channel analog multiplexer/demultiplexer operating over the wide 3-18V supply range. The HEF4051 (NXP) and MC144051 (onsemi) are direct pin-compatible equivalents. For higher speed at the cost of narrower voltage range, the 74HC4051 HC/HCT families offer significantly faster propagation delay and lower power consumption at 2-6V. Surface-mount versions use the BM/M suffix (SOIC); through-hole versions use the BE suffix (DIP).