CD4052 — Dual 4-Channel Analog Multiplexer / Demultiplexer

Overview

The CD4052 (CD4052B / HEF4052B) is a dual 4-channel analog multiplexer and demultiplexer IC manufactured by Texas Instruments, ON Semiconductor, and Renesas. It functions as a digitally-controlled dual 4-position rotary switch, independently connecting common input/output terminals X and Y to one of four channel lines (0X–3X and 0Y–3Y).

Supporting supply voltages from 3.0V to 18.0V DC (and bipolar signal swings up to $\pm 9\text{V}$ when $V_{EE} = -9\text{V}$ ), the CD4052 is bidirectionally transparent, allowing analog audio, sensor signals, or digital bus lines to flow in either direction.

Quick reference


Supply Voltage (`VDD - VSS`)	3.0 V to 18.0 V DC (CD4000B) / 2.0V to 6.0V DC (74HC4052)
Bipolar Negative Rail (`VEE`)	Down to $-9.0\text{ V}$ DC (for dual-rail AC audio signals)
Channels	Dual 4-Channel (2x 1-of-4 Multiplexer/Demultiplexer)
On-Resistance ( $R_{ON}$ )	$125\ \Omega$ typical at $VDD = 15\text{V}$ ( $240\ \Omega$ at $10\text{V}$ )
Signal Bandwidth	$60\text{ MHz}$ (-3 dB cutoff frequency)
Control Inputs	Binary Select lines $A$ and $B$ , Inhibit input ( $INH$ )
Package	16-pin DIP / SOIC-16 / TSSOP-16

Pinout (DIP-16 Package)

text

             ┌───┴───┐
          0Y 1│ 1   16│ VDD (+3V to +18V)
          2Y 2│       │15 2X
    Y (COMMON)3│ CD4052│14 1X
          3Y 4│       │13 X (COMMON)
          1Y 5│       │12 0X
         INH 6│       │11 3X
         VEE 7│       │10 A (Select LSB)
         VSS 8│       │9  B (Select MSB)
             └───────┘

Pin	Name	Description
1	`0Y`	Channel Y Input/Output 0
2	`2Y`	Channel Y Input/Output 2
3	`Y`	Common Channel Y Input/Output
4	`3Y`	Channel Y Input/Output 3
5	`1Y`	Channel Y Input/Output 1
6	`INH`	Inhibit Input (High = Disconnect all channels; Low = Enable active channel)
7	`VEE`	Negative Voltage Rail (Connect to GND for single supply, or negative voltage for AC signals)
8	`VSS`	Digital Ground (0 V)
9	`B`	Binary Select Input Bit 1 (MSB)
10	`A`	Binary Select Input Bit 0 (LSB)
11	`3X`	Channel X Input/Output 3
12	`0X`	Channel X Input/Output 0
13	`X`	Common Channel X Input/Output
14	`1X`	Channel X Input/Output 1
15	`2X`	Channel X Input/Output 2
16	`VDD`	Positive Power Supply (+3.0V to +18.0V DC)

Truth Table

INH	B	A	Selected Channel X	Selected Channel Y
Low ( $0$ )	$0$	$0$	$0X$	$0Y$
Low ( $0$ )	$0$	$1$	$1X$	$1Y$
Low ( $0$ )	$1$	$0$	$2X$	$2Y$
Low ( $0$ )	$1$	$1$	$3X$	$3Y$
High ( $1$ )	X	X	None (High-Z Off)	None (High-Z Off)

Common mistakes

Leaving VEE (Pin 7) floating: For single-supply DC applications ( $0\text{V} \dots 5\text{V}$ ), VEE must be tied directly to VSS (GND). Leaving VEE floating prevents analog switches from turning ON reliably.
Exceeding $VDD$ or $VEE$ signal range: Analog signals routed through the switches must stay strictly between $V_{EE} \le V_{IN} \le V_{DD}$ . Exceeding the supply rails causes internal ESD diode conduction and audio clipping.

Notes

CD4052 vs CD4051 vs CD4053: CD4051 is a single 8-channel mux; CD4052 is a dual 4-channel mux (stereo audio routing); CD4053 is a triple 2-channel mux (SPDT switches).