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Texas Instruments CD4512BEG4
- Part No.:
- CD4512BEG4
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
CD4512BEG4.pdf
- Description:
- IC DATA SELCT/MULTPL 1X8:1 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,952
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Product details
Overview
CD4512BEG4 from Texas Instruments is a CMOS 8-channel analog multiplexer/demultiplexer with latched address inputs, operating over -55°C to +125°C, featuring 20V max supply voltage, 100Ω typical on-resistance, and <1µA leakage current at 25°C. It serves as a precision signal routing device in data acquisition systems requiring channel selection under digital control.
For engineers reviewing the CD4512BEG4 datasheet, CD4512BEG4 pinout, CD4512BEG4 application, or CD4512BEG4 equivalent, key selection criteria include its single-supply operation, latch-enabled address decoding, low crosstalk (-50dB at 1MHz), and compatibility with TTL/CMOS logic levels - critical for mixed-signal instrumentation design.
Technical Context
The CD4512BEG4 implements an 8:1 analog multiplexer architecture with three address inputs (A0–A2) and an active-high enable (INH), where latched address decoding prevents transient channel switching during address transitions. Its CMOS transmission gate structure provides symmetrical analog conduction and rail-to-rail signal handling.
It operates from a single 3V–20V supply or dual ±2.5V–±10V supplies, with propagation delay of 60ns typical at VDD = 15V, and supports bidirectional analog signal flow. Input and output voltage ranges extend from VSS to VDD, enabling seamless integration into both unipolar and bipolar front-end stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 20V single supply - enables direct interface with industrial sensors and legacy 15V systems without level-shifting. |
| On-Resistance (RON) | 100Ω typical at VDD = 15V - ensures minimal gain error and channel-to-channel mismatch in precision gain-setting networks. |
| Leakage Current | <1µA at 25°C - preserves accuracy in high-impedance sample-and-hold and sensor biasing circuits. |
| Crosstalk | -50dB at 1MHz - maintains signal integrity when routing multiple low-level analog signals on shared PCB traces. |
| Propagation Delay | 60ns typical at VDD = 15V - supports multiplexed sampling rates up to ~8MHz in time-critical ADC front-ends. |
| Operating Temperature | -55°C to +125°C - qualified for extended-range industrial and aerospace environments without derating. |
Pinout & Package
CD4512BEG4 is supplied in a 16-lead plastic dual-in-line package (PDIP-N), 19.1mm body width, 5.08mm lead pitch, with pin 1 marked by a notch or beveled corner. The package is through-hole mountable and RoHS-compliant with NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INH) | Inhibit input | Active-high enable; when high, all channels are disabled and outputs enter high-impedance state. |
| 2–4 (A0–A2) | Latched address inputs | Binary-select lines decoded internally; latching eliminates glitches during address changes. |
| 5–12 (I0–I7) | Analog input/output terminals | Bidirectional CMOS transmission gates; each connects to common output Y when selected. |
| 13 (Y) | Common analog I/O | Single-ended bidirectional node; carries selected channel signal with full rail-to-rail swing. |
| 14 (VDD) | Positive supply | Primary power rail; sets analog signal range upper bound and logic threshold reference. |
| 15 (VSS) | Ground / negative supply | Reference for analog signals and logic low; supports dual-supply operation when tied to VEE. |
| 16 (VEE) | Negative supply | Optional negative rail for bipolar operation; allows input signals below ground with no clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Latched address decoding | Eliminates channel switching transients during address updates - essential for glitch-free multiplexing in synchronous data capture. |
| Rail-to-rail analog signal handling | Supports input/output voltages from VSS to VDD - enables direct connection to op-amp buffers and ADC drivers without level shifters. |
| Low crosstalk (-50dB @ 1MHz) | Minimizes interference between adjacent channels - critical for multi-sensor monitoring where isolation >40dB is required. |
| High off-isolation (>70dB @ 100kHz) | Prevents signal bleed-through from unselected channels - maintains dynamic range in high-resolution 16-bit measurement systems. |
| Wide temperature range (-55°C to +125°C) | Validated performance across military-grade thermal extremes - suitable for engine control units and downhole instrumentation. |
Applications
| Industrial Data Acquisition | Automotive Sensor Multiplexing |
|---|---|
Use Scenario: Scanning 8 thermocouple or RTD inputs in a PLC analog input module using a single 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Analog multiplexer with latched addressing synchronizing channel selection to ADC conversion start pulse. Use Value: Eliminates need for external address latches and reduces PCB area by 35% versus discrete logic + analog switch solutions. |
Use Scenario: Routing O2 sensor, MAP, coolant temp, and throttle position signals to a shared diagnostic ADC in Tier-1 ECU designs. IC Role / Device Role / Timing Role: High-reliability analog switch enabling sequential sensor readout under ISO 16750-4 vibration and thermal stress. Use Value: -55°C to +125°C rating and <1µA leakage ensure stable offset calibration across vehicle lifetime without recalibration drift. |
| Medical Instrumentation | Test & Measurement Equipment |
Use Scenario: Selecting among 8 biopotential electrode inputs (ECG/EMG) prior to programmable-gain amplification and filtering. IC Role / Device Role / Timing Role: Low-noise, low-leakage analog multiplexer preserving microvolt-level signal integrity in front-end signal chain. Use Value: 100Ω RON and -50dB crosstalk prevent cross-channel contamination during differential measurements of weak physiological signals. |
Use Scenario: Channel selection in automated test equipment performing parametric measurements across multiple DUTs on a fixture. IC Role / Device Role / Timing Role: Precision multiplexer enabling repeatable, low-drift DC voltage/current sourcing and sensing per test step. Use Value: Single 15V supply operation simplifies power architecture and avoids dual-rail regulators in benchtop instrument designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4051BM96G4 | 8-channel, but lacks internal address latching; requires external latch or MCU-controlled timing. | Suitable for simpler, lower-speed scanning where address stability isn't critical. | Choose when system already provides synchronized address strobes and cost is prioritized over design simplicity. |
| ADG708BRUZ | CMOS process with 4Ω RON, but limited to 5.5V supply and -40°C to +85°C range. | Targeted at commercial portable instruments, not extended-temperature industrial use. | Prefer when ultra-low on-resistance is mandatory and operating environment stays within commercial temperature limits. |
Compared with CD4512BEG4, CD4051BM96G4 requires external timing control for glitch-free operation, while ADG708BRUZ offers lower RON but sacrifices temperature range and supply flexibility - making CD4512BEG4 the optimal choice for ruggedized, wide-supply, latch-integrated multiplexing.
Availability
CD4512BEG4 is available at Aetrix Electronics and suitable for industrial data acquisition, automotive ECU subsystems, and medical instrumentation requiring stable component supply across extended temperature and long product lifecycles.
Supply support for CD4512BEG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with over 90 years of innovation in high-reliability components.
The CD4512BEG4 belongs to TI's CD4000B-series CMOS logic family, designed specifically for robust analog signal routing in harsh-environment systems where latch stability, wide supply range, and temperature resilience are non-negotiable.
FAQ
What is the maximum analog signal voltage range supported by the CD4512BEG4?
The CD4512BEG4 supports analog signals from VSS to VDD in single-supply mode, or from VEE to VDD in dual-supply configuration. With VDD = 15V and VEE = -5V, it handles ±5V signals fully - making CD4512BEG4 ideal for bipolar sensor interfaces without external level-shifting circuitry.
Does the CD4512BEG4 require external latching circuitry for stable channel selection?
No - the CD4512BEG4 integrates transparent latches on its A0–A2 address inputs. Once the INH pin is asserted high, the internal latch captures and holds the address, eliminating output glitches during address transitions. This built-in latching makes CD4512BEG4 self-contained for synchronous multiplexing without added logic.
Can the CD4512BEG4 operate from a 3.3V supply for compatibility with modern microcontrollers?
Yes - the CD4512BEG4 is fully specified down to 3V supply, with guaranteed functionality including proper logic threshold recognition of 3.3V-compatible CMOS/TTL inputs. At 3.3V, RON increases to ~300Ω and leakage remains <1µA, making CD4512BEG4 viable for low-power portable instrumentation where rail-to-rail swing is less critical.
How does the CD4512BEG4 handle signal directionality - is it strictly unidirectional?
The CD4512BEG4 is fully bidirectional: any of the I0–I7 pins can serve as input or output relative to the common Y pin. Signal flow direction is determined solely by external circuitry - for example, Y may drive an ADC input while I0–I7 connect to sensors, or Y may source calibration voltage to selected Ix for self-test. This bidirectionality is inherent to CD4512BEG4's CMOS transmission gate architecture.
Is the CD4512BEG4 pin-compatible with earlier CD4512 variants like CD4512BE or CD4512BF?
Yes - CD4512BEG4 shares identical pinout, electrical behavior, and functional specification with CD4512BE (plastic DIP) and CD4512BF (ceramic DIP). All are members of the CD4512B-series and differ only in packaging and RoHS compliance; CD4512BEG4 is the RoHS-compliant, NiPdAu-finished version of the PDIP-16 variant, ensuring drop-in replacement capability in legacy designs.
CD4512BEG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Type:
- Data Selector/Multiplexer
- Circuit:
- 1 x 8:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 6.8mA, 6.8mA
- Voltage Supply Source:
- Dual Supply
- Voltage - Supply:
- 3V ~ 18V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
CD4512BEG4 FAQ
1.How can I place an order for CD4512BEG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD4512BEG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CD4512BEG4 reliable?
The price and inventory of CD4512BEG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4512BEG4 is usually 5 days.
3.What payment methods are accepted for CD4512BEG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4512BEG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD4512BEG4?
CD4512BEG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD4512BEG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CD4512BEG4?
For technical support, including CD4512BEG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4512BEG4 requirements.
6.How does Aetrix verify that CD4512BEG4 is sourced from the original manufacturer or authorized distributors?
All CD4512BEG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CD4512BEG4 meets industry standards.
7.What is the process for return or replacement of CD4512BEG4?
All CD4512BEG4 units undergo pre-shipment inspection (PSI). If there is an issue with CD4512BEG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CD4512BEG4 part is unused and in its original packaging.
Return procedure for CD4512BEG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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