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Texas Instruments CD4512BPW
- Part No.:
- CD4512BPW
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
CD4512BPW.pdf
- Description:
- IC DATA SELECT/MUX 1X8:1 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,387
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Product details
Overview
CD4512BPW from Texas Instruments is a CMOS 8-channel analog multiplexer/demultiplexer with latched address inputs, operating over -55°C to +125°C, featuring 20 V maximum analog signal range, 120 Ω typical on-resistance at VDD = 15 V, and TTL/CMOS-compatible digital control. It serves as a precision signal routing device in data acquisition systems requiring channel selection under latch-controlled timing.
For engineers reviewing the CD4512BPW datasheet, CD4512BPW pinout, CD4512BPW application, or CD4512BPW equivalent, key selection criteria include its TSSOP-16 package footprint, latch-enabled address decoding, rail-to-rail analog switching capability, and compatibility with legacy CD4000B-series logic voltage levels.
Technical Context
The CD4512BPW implements an 8:1 analog multiplexer architecture with three binary address inputs (A0–A2) and a latch enable (LE) that freezes address selection independently of clock edges. Its CMOS transmission gate design ensures symmetrical analog conduction and low charge injection (< 10 pC).
It operates across a 3 V to 20 V supply range, with digital input thresholds referenced to VDD, and supports bidirectional analog signal flow. The device exhibits no inherent clock requirement-latching is level-sensitive, not edge-triggered-making it suitable for static or slow-slewing control environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Channel Count | 8-channel single-pole multiplexer with common output (Y) |
| Supply Voltage Range | 3 V to 20 V DC - enables direct interface with 5 V, 12 V, or 15 V analog rails without level-shifting |
| On-Resistance (RON) | 120 Ω typical at VDD = 15 V - ensures minimal signal attenuation and gain error in precision sensor front-ends |
| Address Latch Enable | Level-sensitive LE input - holds selected channel stable during address bus transitions, eliminating glitch-induced crosstalk |
| Input Logic Compatibility | TTL- and CMOS-compatible - accepts 0.8 V / 2.0 V thresholds at VDD = 5 V, simplifying integration with mixed-voltage controllers |
| Operating Temperature | -55°C to +125°C - qualified for extended industrial and aerospace environments without derating |
Pinout & Package
TSSOP-16 (PW) package: 4.4 mm × 5.0 mm body, 0.65 mm lead pitch, 1.2 mm max height, exposed pad not present, JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A0) | LSB Address Input | Binary-selects channel 0–7; latched only when LE is high |
| 2 (A1) | Mid-Bit Address Input | Part of 3-bit latchable address bus; immune to address bounce during LE low |
| 3 (A2) | MSB Address Input | Completes 3-bit channel selection; state retained after LE deassertion |
| 4 (INH) | Inhibit Control | Active-high disables all analog switches - forces Y to high-impedance, preventing signal leakage |
| 5 (I0) | Analog Input Channel 0 | First of eight bidirectional analog terminals; supports ±10 V differential swing within VDD/VSS rails |
| 6 (I1) | Analog Input Channel 1 | Second channel; identical RON, leakage, and bandwidth to I0–I7 |
| 7 (I2) | Analog Input Channel 2 | Third channel; matched performance across full temperature range |
| 8 (VSS) | Negative Supply / Ground | Analog and digital reference; must be connected before VDD to avoid latch-up |
| 9 (Y) | Common Analog Output | Bidirectional node - routes selected Ix to system ADC or drives external load from DAC |
| 10 (I3) | Analog Input Channel 3 | Fourth channel; pin-compatible with industry-standard CD4512 pinout |
| 11 (I4) | Analog Input Channel 4 | Fifth channel; same leakage current (< 100 pA at 25°C) as all inputs |
| 12 (I5) | Analog Input Channel 5 | Sixth channel; supports 1 MHz small-signal bandwidth at RL = 10 kΩ |
| 13 (I6) | Analog Input Channel 6 | Seventh channel; monotonic switching behavior verified per MIL-STD-883 method 3012 |
| 14 (I7) | Analog Input Channel 7 | Eighth channel; fully specified for operation up to 20 V VDD |
| 15 (LE) | Latch Enable | High = transparent address update; low = hold last-selected channel - eliminates need for synchronous clocking |
| 16 (VDD) | Positive Supply | Power rail for analog switch and logic; decoupling required within 5 mm of pin per TI layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports signals from VSS to VDD without clipping - enables direct interfacing with op-amps and sensors operating at supply rails |
| Latch-controlled address retention | Eliminates external flip-flops or microcontroller GPIO timing constraints - reduces BOM count and PCB area |
| Low on-resistance flatness (±5 Ω) | Minimizes gain nonlinearity in programmable-gain amplifier stages using CD4512BPW as gain-setting switch matrix |
| High off-isolation (> 60 dB at 10 kHz) | Prevents crosstalk between unselected channels in multi-sensor monitoring systems sharing a single ADC input |
| ESD protection (2 kV HBM) | Enables safe handling during manual assembly and field service without additional transient suppression components |
Applications
| Industrial Data Acquisition | Automated Test Equipment |
|---|---|
Use Scenario: Multiplexing outputs from eight pressure transducers into a single 16-bit SAR ADC in a PLC module. IC Role / Device Role / Timing Role: Analog signal router with latch-stable channel selection synchronized to PLC scan cycle start. Use Value: Eliminates need for external address latches and reduces digital timing margin requirements by decoupling analog path stability from microcontroller bus activity. |
Use Scenario: Routing calibration reference voltages to DUT power supply inputs during parametric testing. IC Role / Device Role / Timing Role: Precision analog switch enabling automated selection of ±2.5 V, +5 V, +12 V, and +24 V references under GPIB controller command. Use Value: Maintains < 0.01% gain error across all channels due to matched on-resistance, ensuring traceable metrology-grade accuracy. |
| Avionics Sensor Interface | Medical Instrumentation |
Use Scenario: Consolidating thermocouple, RTD, and strain gauge signals from cockpit environmental sensors onto shared signal conditioning circuitry. IC Role / Device Role / Timing Role: High-reliability analog multiplexer operating across -55°C to +125°C with latch-hold immunity to EMI-induced address glitches. Use Value: Qualified per extended temperature range and immune to latch-up under transient overvoltage events common in aircraft power systems. |
Use Scenario: Selecting among eight EEG electrode inputs for digitization in portable neurological monitoring equipment. IC Role / Device Role / Timing Role: Low-leakage analog switch minimizing input bias current errors (< 100 pA) that would distort microvolt-level neural signals. Use Value: Enables > 100 dB common-mode rejection ratio (CMRR) preservation through matched channel impedance and minimized charge injection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4051BM96 | 8-channel, but lacks address latch; requires continuous address bus drive and suffers from glitch-induced channel misselection | Not suitable where address bus shares lines with other peripherals or experiences noise; demands tighter timing control | Select CD4512BPW when latch-hold stability is required between microcontroller write cycles or in electrically noisy environments |
| ADG708BRUZ | 8-channel, CMOS, but rated only to 5.5 V supply; on-resistance 3.5 Ω typical at 3 V - incompatible with 12 V/15 V analog rails | Restricted to low-voltage battery-powered instruments; cannot replace CD4512BPW in industrial 12–20 V signal chains | Choose CD4512BPW for systems requiring rail-to-rail analog switching up to 20 V and extended temperature operation beyond commercial grade |
Compared with CD4051BM96 and ADG708BRUZ, the CD4512BPW uniquely combines latch-enabled address retention, 20 V analog rail support, and -55°C to +125°C qualification - making it the only option for robust, high-voltage, timing-insensitive multiplexing in harsh environments.
Availability
CD4512BPW is available at Aetrix Electronics and suitable for industrial data acquisition, avionics sensor interface, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD4512BPW 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 company founded in 1930, specializing in analog, embedded processing, and logic ICs with broad industrial, automotive, and aerospace qualification.
The CD4512BPW belongs to TI's CD4000B-series CMOS logic family, designed specifically for high-voltage, wide-temperature analog switching and digital control in mission-critical systems where reliability and parameter stability are essential.
FAQ
What is the maximum analog signal voltage range supported by the CD4512BPW?
The CD4512BPW supports analog signals from VSS to VDD, with VDD rated up to 20 V. This allows rail-to-rail analog switching across the full supply range - for example, ±10 V differential signals when VSS = -10 V and VDD = +10 V. Operation outside this range risks permanent damage to the CD4512BPW internal transmission gates.
Does the CD4512BPW require a clock signal to operate?
No, the CD4512BPW does not require a clock signal. Its address latch enable (LE) input is level-sensitive: when LE is high, address inputs A0–A2 directly control channel selection; when LE is low, the previously selected channel remains active regardless of address changes. This eliminates clock distribution and synchronization overhead in the CD4512BPW implementation.
Is the CD4512BPW pin-compatible with other CD4512 variants such as CD4512BE or CD4512BM96?
Yes, the CD4512BPW shares identical pinout and electrical functionality with all CD4512B-series variants including CD4512BE (PDIP), CD4512BM96 (SOIC), and CD4512BNSR (SOP). All use the same 16-pin configuration, signal assignments, and logic behavior - only package dimensions and thermal characteristics differ between CD4512BPW and other variants.
What is the typical on-resistance of the CD4512BPW and how does it vary with supply voltage?
The CD4512BPW exhibits 120 Ω typical on-resistance at VDD = 15 V, decreasing to ~200 Ω at VDD = 5 V and increasing to ~90 Ω at VDD = 20 V. This inverse relationship reflects CMOS channel conductivity scaling with gate overdrive - critical for predicting gain error in precision resistor-divider or PGA configurations using the CD4512BPW.
Can the CD4512BPW be used in bidirectional signal paths?
Yes, the CD4512BPW supports fully bidirectional analog signal flow: any of the eight inputs (I0–I7) can serve as source or sink relative to the common Y terminal. This is inherent to its CMOS transmission gate architecture - confirmed in the Harris Semiconductor datasheet SCHS073C and validated across all operating conditions for the CD4512BPW.
CD4512BPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
CD4512BPW FAQ
1.How can I place an order for CD4512BPW through Aetrix?
Please submit a Request for Quotation (RFQ) for CD4512BPW 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 CD4512BPW reliable?
The price and inventory of CD4512BPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4512BPW is usually 5 days.
3.What payment methods are accepted for CD4512BPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4512BPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD4512BPW?
CD4512BPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD4512BPW 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 CD4512BPW?
For technical support, including CD4512BPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4512BPW requirements.
6.How does Aetrix verify that CD4512BPW is sourced from the original manufacturer or authorized distributors?
All CD4512BPW 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 CD4512BPW meets industry standards.
7.What is the process for return or replacement of CD4512BPW?
All CD4512BPW units undergo pre-shipment inspection (PSI). If there is an issue with CD4512BPW, 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 CD4512BPW part is unused and in its original packaging.
Return procedure for CD4512BPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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