Specifications
| Type | Description |
|---|---|
| Part Number | CD74HC4051 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | N (PDIP-16) 19.30 mm × 6.35 mm; D (SOIC-16) 9.9 mm × 3.9 mm; NS (SOP-16) 10.3 mm × 5.3 mm; PW (TSSOP-16) 5 mm × 4.4 mm |
| Device Function | Digitally controlled bidirectional analog switch; CDx4HC405x / CDx4HCT405x family description |
| Multiplexer Configuration | 8 channels to 1 common terminal; CDx4HCx4051 functional diagram and pinout |
| Analog Input Voltage Range | ±5 V maximum; wide analog input voltage range feature |
| Switch Voltage Range | 0 V to 10 V; feature list |
| Control Supply Voltage | 4.5 V to 5.5 V; operation control voltage feature |
| ON Resistance | 70 Ω typical; VCC - VEE = 4.5 V |
| ON Resistance | 40 Ω typical; VCC - VEE = 9 V |
| Operating Temperature Range | -40°C to +125°C; feature list for wide operating temperature range |
| Ambient Temperature Range | -55°C to +125°C; recommended operating conditions, TA |
| Logic Input Compatibility | VIL ≤ 0.8 V, VIH ≥ 2 V; direct LSTTL input logic compatibility |
| CMOS Input Leakage | II ≤ 1 µA; at VOL, VOH |
| Enable Function | Enable high disables all switches to OFF state; device description |
| Enable Pin Polarity | Active low; pin !E, pin 6 |
| Address Select Inputs | S0, S1, S2; CDxHCx4051B pin functions |
| Positive Supply Pin | VCC on pin 16; CDxHCx4051B pin functions |
| Negative Supply Pin | VEE on pin 7; CDxHCx4051B pin functions |
| Ground Pin | GND on pin 8; CDxHCx4051B pin functions |
| Common Terminal | COM OUT/IN on pin 3; CDxHCx4051B pin functions |
| Absolute Maximum Supply Differential | -0.5 V to 10.5 V; VCC - VEE |
| Absolute Maximum VCC | -0.5 V to 7 V; DC supply voltage |
| Absolute Maximum VEE | 0.5 V to -7 V; DC supply voltage |
| Input Diode Current | -20 mA to 20 mA; VI < -0.5 V or VI > VCC + 0.5 V |
| Switch Diode Current | -20 mA to 20 mA; VI < VEE - 0.5 V or VI > VCC + 0.5 V |
| DC Switch Current | -25 mA to 25 mA; VI < VEE - 0.5 V or VI > VCC + 0.5 V |
| DC VCC or Ground Current | -50 mA to 50 mA; absolute maximum ratings |
| DC VEE Current | -20 mA; absolute maximum ratings |
| Logic Control Input Voltage | -0.5 V to 30 V; EN, Ax, SELx pins |
| Maximum Junction Temperature | 150°C; TJMAX |
| Storage Temperature | -65°C to 150°C; Tstg |
| Lead Temperature | 300°C maximum; soldering, 10 s |
| ESD HBM Rating | ±500 V; human body model, ANSI/ESDA/JEDEC JS-001, all pins |
| ESD CDM Rating | ±200 V; charged device model, JEDEC JESD22-C101, all pins |
| Recommended VCC Range | 2 V to 6 V; CD54 and 74HC types, full package temperature range |
| Recommended VCC - VEE Range | 2 V to 10 V; CD54 and 74HC types, full package temperature range |
| Recommended VEE Range | 0 V to -6 V; CD54 and 74HC types, full package temperature range |
| DC Input Control Voltage | 0 V to VCC; VI |
| Analog Switch I/O Voltage | VEE to VCC; VIS |
| Input Rise and Fall Time | 0 ns to 1000 ns; VCC = 2 V |
| Input Rise and Fall Time | 0 ns to 500 ns; VCC = 4.5 V |
| Input Rise and Fall Time | 0 ns to 400 ns; VCC = 6 V |
| Input High Voltage | 1.5 V minimum; CD74HC405x, VCC = 2 V, TA = 25°C to +125°C |
| Input High Voltage | 3.15 V minimum; CD74HC405x, VCC = 4.5 V, TA = 25°C to +125°C |
| Input High Voltage | 4.2 V minimum; CD74HC405x, VCC = 6 V, TA = 25°C to +125°C |
| Input Low Voltage | 0.5 V maximum; CD74HC405x, VCC = 2 V, TA = 25°C to +125°C |
| Input Low Voltage | 1.35 V maximum; CD74HC405x, VCC = 4.5 V, TA = 25°C to +125°C |
| Input Low Voltage | 1.8 V maximum; CD74HC405x, VCC = 6 V, TA = 25°C to +125°C |
| Junction-to-Ambient Thermal Resistance | 77.3°C/W; CD74HC4051, N PDIP-16 package |
| Junction-to-Ambient Thermal Resistance | 99.3°C/W; CD74HC4051, NS SO-16 package |
| Junction-to-Ambient Thermal Resistance | 116.5°C/W; CD74HC4051, PW TSSOP-16 package |
| Datasheet Status | request_only |
Product Overview
The CD74HC4051 is a Texas Instruments Signal_Chain device described as an 8-channel analog multiplexer/demultiplexer. Its device function is a digitally controlled bidirectional analog switch, with 8 channels connected to one common terminal. The common terminal is COM OUT/IN on pin 3, with address select inputs S0, S1, and S2 controlling channel selection.
Supply and signal limits define the usable switching range. Recommended operation includes VCC from 2 V to 6 V, VCC - VEE from 2 V to 10 V, and VEE from 0 V to -6 V. Analog switch I/O voltage spans VEE to VCC, while the feature list specifies a ±5 V maximum analog input range and 0 V to 10 V switch voltage range. The enable input is active low; driving enable high disables all switches to the OFF state.
The part is offered in N PDIP-16, D SOIC-16, NS SOP-16, and PW TSSOP-16 packages. Assembly and thermal limits include 300°C maximum lead temperature for 10 s soldering, 150°C maximum junction temperature, and package thermal resistance values from 77.3°C/W to 116.5°C/W.
Key Features
- 8 channels routed to one common terminal
- Digitally controlled bidirectional analog switch function
- ±5 V maximum analog input voltage range
- 0 V to 10 V switch voltage range
- 4.5 V to 5.5 V control supply operation
- 70 Ω typical ON resistance at 4.5 V differential
- 40 Ω typical ON resistance at 9 V differential
- Active-low enable input on pin 6
- Enable high turns all switches OFF
- S0, S1, and S2 address select inputs
- VEE to VCC analog switch I/O range
- -40°C to +125°C operating temperature range
Typical Applications
- Analog signal channel selection
- Bidirectional analog signal routing
- 8-to-1 signal multiplexing
- 1-to-8 signal demultiplexing
- Control-voltage selected switching
- Common-terminal analog switching
- LSTTL-compatible logic control interfaces
Procurement Notes
When requesting a quote for CD74HC4051, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What type of device is the CD74HC4051?
The CD74HC4051 is an 8-channel analog multiplexer/demultiplexer from Texas Instruments. The extracted datasheet facts describe it as a digitally controlled bidirectional analog switch with 8 channels routed to one common terminal.
How is the enable pin configured on CD74HC4051?
The enable input is active low and is listed as pin !E on pin 6. According to the extracted facts, driving enable high disables all switches and places them in the OFF state.
What supply ranges are recommended for this device?
Recommended operating facts list VCC from 2 V to 6 V, VCC - VEE from 2 V to 10 V, and VEE from 0 V to -6 V for CD54 and 74HC types across the full package temperature range.
What package options are listed for CD74HC4051?
The package data lists N PDIP-16, D SOIC-16, NS SOP-16, and PW TSSOP-16 options. The provided dimensions include 19.30 mm × 6.35 mm for N and 5 mm × 4.4 mm for PW.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.