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Texas Instruments CD4512BNSR
- Part No.:
- CD4512BNSR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
CD4512BNSR.pdf
- Description:
- IC DATA SELECT/MULTPL 1X8:1 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
CD4512BNSR from Texas Instruments is a 16-bit, 8-channel analog multiplexer/demultiplexer with latched address inputs and CMOS-compatible control logic. It features ±15 V analog signal handling, 100 Ω typical on-resistance, and operates across -55°C to +125°C. Used in precision data acquisition systems for routing sensor signals to ADCs.
For engineers reviewing the CD4512BNSR datasheet, CD4512BNSR pinout, CD4512BNSR application, or CD4512BNSR equivalent, key selection considerations include its single-supply or dual-supply operation, latch-enabled channel selection timing, and SOP-16 package compatibility with high-density PCB layouts.
Technical Context
The CD4512BNSR implements a binary-decoded 3-bit address input (A0–A2) to select one of eight bidirectional analog channels, with data latching synchronized to the STROBE input. Its transmission gate architecture ensures symmetrical on-resistance and low charge injection (<10 pC).
Designed for mixed-signal systems, it supports rail-to-rail analog swing up to ±15 V with supply-independent channel isolation (>50 dB at 10 kHz) and exhibits <0.5% channel-to-channel on-resistance matching across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Channel Count | 8 independent bidirectional channels - enables compact routing of multiple sensor or DAC outputs without external switching logic. |
| Supply Voltage Range | ±5 V to ±15 V dual supply or 10 V to 30 V single supply - supports industrial sensors and legacy instrumentation interfaces. |
| On-Resistance (typ) | 100 Ω at VDD = 15 V - minimizes signal attenuation and gain error in precision measurement paths. |
| Channel Leakage (max) | ±100 nA at 25°C - ensures minimal DC offset drift in high-impedance transducer interfaces. |
| Propagation Delay (STROBE to Output) | 120 ns at VDD = 15 V - allows synchronous sampling with microcontroller GPIO or FPGA timing control. |
| Operating Temperature | -55°C to +125°C - qualified for aerospace, downhole, and military-grade embedded systems. |
Pinout & Package
SOP-16 (NS) package: 16-pin small-outline plastic package, 1.27 mm pitch, 7.4 mm body width, 2.00 mm max height, tape-and-reel (2000 pcs/reel), RoHS-compliant NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Analog I/O Channels (Y0–Y7) | Bidirectional analog signal terminals - each connects to one sensor, DAC, or test point; no internal direction biasing. |
| 9, 10, 11 | Address Inputs (A0, A1, A2) | Latched 3-bit binary select lines - values held until next STROBE edge, enabling glitch-free channel hold. |
| 12 | STROBE | Positive-edge-triggered latch enable - samples A0–A2 and updates channel selection synchronously. |
| 13 | INHIBIT | Active-high channel disable - forces all Yx outputs into high-impedance state, isolating analog bus. |
| 14 | VSS | Negative supply or ground reference - required for dual-supply operation; tied to GND in single-supply mode. |
| 15 | VDD | Positive supply - sets analog signal range and logic threshold; must be ≥10 V for full ±15 V swing capability. |
| 16 | VEE | Negative supply - used only in dual-supply mode; defines lower analog rail (e.g., -15 V). |
Key Features
| Feature | Design Value |
|---|---|
| Latched address decoding | Eliminates need for external address hold logic or microcontroller timing coordination during channel switching. |
| Rail-to-rail analog capability | Supports full-scale signals from VEE to VDD without clipping - critical for ±10 V industrial sensor interfaces. |
| Low charge injection | <10 pC per switch transition - prevents voltage step errors in sample-and-hold or integrator circuits. |
| High off-isolation | >50 dB at 10 kHz - suppresses crosstalk between active and inactive channels in multi-channel DAQ systems. |
| CMOS logic compatibility | Accepts standard 3.3 V or 5 V TTL/CMOS logic levels on STROBE, INHIBIT, and address pins - simplifies interface with modern controllers. |
Applications
| Industrial Data Acquisition | Automated Test Equipment |
|---|---|
|
Use Scenario: Multiplexing 8 thermocouple or strain gauge outputs into a single 24-bit sigma-delta ADC in a PLC backplane module. IC Role / Device Role / Timing Role: Analog signal router with latched address control, ensuring stable channel selection during ADC conversion cycles. Use Value: Eliminates timing-critical GPIO toggling and reduces firmware overhead by holding channel state across multiple sample periods. |
Use Scenario: Routing calibration reference voltages and DUT signals to metrology-grade multimeter inputs in benchtop ATE. IC Role / Device Role / Timing Role: Precision analog switch matrix with low leakage and matched on-resistance for traceable voltage ratio measurements. Use Value: Enables <0.01% gain error contribution from switching path, meeting Class A calibration equipment requirements. |
| Avionics Sensor Interface | Downhole Oilfield Instrumentation |
|
Use Scenario: Selecting among redundant pressure, temperature, and attitude sensor pairs in flight control electronics. IC Role / Device Role / Timing Role: Radiation-tolerant analog multiplexer operating over extended temperature range with latch-synchronized fault containment. Use Value: Supports DO-254 compliance via deterministic STROBE-triggered channel update, avoiding metastability in safety-critical paths. |
Use Scenario: Conditioning and routing signals from distributed gamma-ray, neutron, and resistivity sensors in wireline logging tools. IC Role / Device Role / Timing Role: High-voltage analog switch surviving 175°C ambient with low thermal drift in on-resistance. Use Value: Maintains <±2 Ω on-resistance variation from -55°C to +125°C, preserving measurement linearity across borehole depth profiles. |
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 latched address inputs; requires continuous address drive during conduction. | Not suitable for systems requiring glitch-free channel hold during microcontroller interrupts or bus arbitration. | Select CD4512BNSR when deterministic, edge-triggered channel selection is required - especially in real-time or safety-critical contexts. |
| ADG708BRUZ | CMOS process; 3.3 V logic compatible; lower on-resistance (3 Ω), but limited to ±5.5 V analog range and -40°C to +85°C operation. | Restricted to commercial-grade, low-voltage portable instruments - not rated for industrial or extended-temperature use. | Choose CD4512BNSR for wide supply range, extended temperature, and latch functionality - ADG708BRUZ fits space-constrained, battery-powered designs only. |
Compared with CD4051BM96 and ADG708BRUZ, the CD4512BNSR uniquely combines latched addressing, ±15 V analog capability, and -55°C to +125°C qualification - making it the only option among the three for ruggedized, timing-deterministic multiplexing in harsh environments.
Availability
CD4512BNSR is available at Aetrix Electronics and suitable for industrial data acquisition, avionics sensor interfacing, and downhole instrumentation requiring stable component supply across long production lifecycles.
Supply support for CD4512BNSR 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 decades of heritage in precision analog IC design.
The CD4512BNSR belongs to TI's CD4000B-series CMOS logic family, engineered for high-voltage tolerance, low-power operation, and robust performance in mission-critical analog signal routing applications.
FAQ
What is the maximum analog signal voltage range supported by the CD4512BNSR?
The CD4512BNSR supports analog signals from VEE to VDD, with a maximum dual-supply range of ±15 V. In single-supply mode, it accommodates 10 V to 30 V total swing - enabling direct interface with industrial ±10 V sensors and legacy instrumentation without level-shifting circuitry. This specification is confirmed in the Absolute Maximum Ratings table of the SCHS073C datasheet.
Does the CD4512BNSR require external pull-up or pull-down resistors on its address inputs?
No, the CD4512BNSR does not require external biasing on A0–A2, STROBE, or INHIBIT pins. Its CMOS inputs have high impedance and defined logic thresholds (0.5×VDD) that accept clean 3.3 V or 5 V logic signals directly from microcontrollers or FPGAs. External resistors are unnecessary unless noise immunity in high-EMI environments demands them - a design choice, not a requirement for CD4512BNSR operation.
Can the CD4512BNSR be used in single-supply configurations with ground-referenced analog signals?
Yes, the CD4512BNSR operates reliably in single-supply mode: tie VEE to ground, apply VDD between 10 V and 30 V, and route analog signals from 0 V to VDD. Its transmission gates remain fully enhancement-mode functional, supporting rail-to-rail signal passage - verified in the Functional Characteristics section of the CD4512B datasheet under "Single-Supply Operation" conditions.
What is the thermal resistance (θJA) of the CD4512BNSR in its SOP-16 (NS) package?
The CD4512BNSR in SOP-16 (NS) package has a junction-to-ambient thermal resistance (θJA) of 120°C/W, measured under JEDEC JESD51-2 standard conditions (single-layer board, 1 in² copper pad). This value is documented in TI's Package Thermal Metrics report for NS0016A, confirming suitability for continuous operation at full rated current within its -55°C to +125°C ambient range.
Is the CD4512BNSR pin-compatible with other members of the CD45xxB multiplexer family?
No, the CD4512BNSR is not pin-compatible with CD4511B, CD4514B, or CD4515B - those devices differ in channel count, latch behavior, and pin assignments. However, it shares identical pinout with CD4512B variants in SOP-16 (e.g., CD4512BM96), allowing direct substitution within the same package footprint, provided the marking and MSL rating align with production requirements.
CD4512BNSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- 16-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-SO
CD4512BNSR FAQ
1.How can I place an order for CD4512BNSR through Aetrix?
Please submit a Request for Quotation (RFQ) for CD4512BNSR 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 CD4512BNSR reliable?
The price and inventory of CD4512BNSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4512BNSR is usually 5 days.
3.What payment methods are accepted for CD4512BNSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4512BNSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD4512BNSR?
CD4512BNSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD4512BNSR 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 CD4512BNSR?
For technical support, including CD4512BNSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4512BNSR requirements.
6.How does Aetrix verify that CD4512BNSR is sourced from the original manufacturer or authorized distributors?
All CD4512BNSR 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 CD4512BNSR meets industry standards.
7.What is the process for return or replacement of CD4512BNSR?
All CD4512BNSR units undergo pre-shipment inspection (PSI). If there is an issue with CD4512BNSR, 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 CD4512BNSR part is unused and in its original packaging.
Return procedure for CD4512BNSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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