CD74HCT4051M96
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| Part Number | CD74HCT4051M96 |
|---|---|
| Manufacturer |
 Texas Instruments
|
| Description | The CD74HCT4051M96 is a high-speed CMOS 8-channel analog multiplexer and demultiplexer from Texas Instruments. Designed for flexible analog and digital signal routing, the device integrates eight individually selectable bidirectional analog switches into a single compact SOIC-16 surface-mount package. The CD74HCT4051 belongs to the 74HCT high-speed CMOS logic family, combining the low static power consumption of CMOS technology with input logic thresholds compatible with standard TTL logic levels. This makes the device particularly suitable for interfacing with 5V microcontrollers, digital control circuits, and legacy TTL-based systems. The device operates with a logic supply voltage of 4.5V to 5.5V. Its TTL-compatible digital control inputs recognize a LOW level of 0.8V or below and a HIGH level of 2.0V or above under specified operating conditions, allowing direct control from compatible digital logic devices. The CD74HCT4051 contains eight independent analog channels connected to a common analog input/output terminal through an internal switching network. Three digital address inputs, identified as S0, S1, and S2, determine which of the eight channels is connected to the common terminal. Because the analog switches are bidirectional, the device can operate as either an 8-to-1 multiplexer or a 1-to-8 demultiplexer. In multiplexer operation, one of eight analog signals is routed to a common output. In demultiplexer operation, a common input signal is directed to one of eight selectable outputs. An integrated enable input provides additional switching control. When the enable input is driven HIGH, all eight analog switches are disabled and placed in their OFF state, electrically disconnecting the common terminal from the individual channels. The CD74HCT4051 features break-before-make switching, which helps prevent two analog channels from being connected simultaneously during address transitions. This characteristic reduces unwanted signal interaction and provides improved channel isolation during switching operations. The analog switching network provides an ON-state resistance of up to approximately 130Ω under specified operating conditions. The actual resistance depends on supply voltage, analog signal voltage, temperature, and operating conditions. Designers should consider this resistance when selecting source impedance, load impedance, and signal bandwidth. The device provides a typical -3dB analog bandwidth of approximately 180MHz under specified measurement conditions. This bandwidth capability supports a wide variety of analog signal-routing applications, although practical signal performance depends on source impedance, loading, PCB layout, and signal amplitude. The CD74HCT4051 supports analog signals across the voltage range established by its VCC and VEE supply rails. With appropriate supply configurations, the switching network can handle bipolar analog signals, making the device useful for instrumentation and mixed-signal applications. The analog switch supply arrangement can support signal voltages extending across a range of approximately 0V to 10V when the device is operated within its specified supply and analog voltage limits. The digital control circuitry remains referenced to the logic supply and ground terminals. For bipolar signal switching, the device can be configured with a negative analog supply through the VEE terminal. This allows the switching network to pass positive and negative analog waveforms within the permitted analog supply range while maintaining TTL-compatible digital control. The CD74HCT4051 features low OFF-state leakage current, with a maximum specified switch leakage of approximately 400nA under applicable test conditions. Low leakage is important in signal-routing circuits where inactive channels must remain electrically isolated from the selected signal path. The device also provides low channel-to-channel crosstalk, supporting reliable analog signal selection in multichannel systems. The combination of controlled switching, low leakage, and break-before-make operation makes it suitable for instrumentation and data-acquisition applications. A common application for the CD74HCT4051 is ADC input channel expansion. A microcontroller or data-acquisition system with a limited number of analog-to-digital converter inputs can use the multiplexer to sequentially sample signals from up to eight different analog sources through a single ADC channel. The device is also suitable for sensor multiplexing, allowing multiple analog sensors to share a common signal-conditioning or measurement circuit. Typical examples include temperature sensors, pressure sensors, potentiometers, voltage-monitoring inputs, and other low-frequency analog measurement sources. In communication and control systems, the CD74HCT4051 can be used for signal selection, test-point routing, analog monitoring, and configurable signal distribution. The three-bit address interface simplifies channel selection using general-purpose microcontroller GPIO pins. The device is particularly useful in automated test equipment and instrumentation, where multiple signals must be connected sequentially to a measurement circuit. Its integrated eight-channel architecture reduces the number of discrete analog switches and associated control connections required. The CD74HCT4051M96 is specified for an operating ambient temperature range of -55°C to +125°C. This wide temperature capability supports applications in industrial automation, embedded electronics, measurement equipment, and control systems operating under demanding environmental conditions. The CD74HCT4051M96 is housed in a standard 16-pin SOIC surface-mount package, identified by Texas Instruments package code D. The package has a nominal body width of approximately 3.90mm and a pin pitch of 1.27mm, making it suitable for conventional SMT PCB assembly. The M96 ordering suffix identifies the tape-and-reel packaging configuration. The standard manufacturer package quantity is 2500 devices per reel, supporting automated pick-and-place assembly and high-volume electronics manufacturing. The CD74HCT4051M96 is RoHS and REACH compliant and uses a lead-free NiPdAu lead finish. The device has a moisture sensitivity classification of MSL 1 with a maximum specified peak reflow temperature of 260°C. The combination of eight bidirectional analog channels, 8:1 multiplexer and 1:8 demultiplexer functionality, 4.5V to 5.5V TTL-compatible logic operation, 130Ω maximum ON-resistance, approximately 180MHz analog bandwidth, low OFF-state leakage, break-before-make switching, and compact SOIC-16 packaging makes the CD74HCT4051M96 a versatile solution for analog signal selection and distribution. The CD74HCT4051M96 is widely used in data acquisition systems, ADC channel expansion, analog sensor multiplexing, industrial automation, instrumentation, test and measurement equipment, audio signal routing, communication equipment, embedded controllers, analog signal selection, programmable signal routing, industrial monitoring systems, control panels, laboratory equipment, and general-purpose analog and digital switching applications. |
| Product Group | Logic IC |
| MOQ | 2500 pcs |
| SPQ | 2500 pcs |
| Figure/Case | SOIC-16 |
| Package | T&R Pack |
 PDF Datasheet | |
| Ship From | Hong Kong |
| Shipment Way | DHL / Fedex / TNT / UPS / Others |
| Delivery Term | Ex-Works |
| Send RFQ | sales@signalhk.com |
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CD74HCT4051M96
CD74HCT4051M96