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Texas Instruments CD40109BPWRG4
- Part No.:
- CD40109BPWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
CD40109BPWRG4.pdf
- Description:
- IC TRANSLATOR UNIDIR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,664
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Product details
Overview
CD40109BPWRG4 from Texas Instruments is a quad low-to-high (and high-to-low) CMOS level shifter IC with independent dual-supply operation, 3–15 V VDD range, 3–15 V VCC range, and ±0.5 V output swing beyond supply rails. It enables bidirectional voltage translation in mixed-voltage digital systems such as legacy 5 V logic interfacing with modern 3.3 V or 12 V subsystems.
For engineers reviewing the CD40109BPWRG4 datasheet, CD40109BPWRG4 pinout, CD40109BPWRG4 application, or CD40109BPWRG4 equivalent, key selection criteria include unrestricted power-up sequencing, input signal swing down to 0.7×VCC, operation with VCC > VDD for high-to-low shifting, and TSSOP-16 packaging compatible with automated SMT assembly.
Technical Context
The CD40109BPWRG4 implements four independent, non-inverting level-shifting channels using buffered CMOS gate structures with separate VDD (high-side) and VCC (low-side) supplies. Each channel accepts inputs referenced to VSS and delivers outputs referenced to VDD, supporting rail-to-rail input swing relative to VCC and output swing from –0.5 V to VDD + 0.5 V.
No external biasing or pull-up resistors are required. The device operates without sequence restrictions on VDD, VCC, or input signal application, and supports input signals exceeding both VCC and VDD-provided minimum input high threshold remains ≥0.7×VCC and all voltages stay within absolute maximum ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Supply Range | 3 V to 15 V - sets high-side output rail; defines maximum output voltage and noise margin for downstream 5 V/12 V logic. |
| VCC Supply Range | 3 V to 15 V - powers low-side input stage; determines minimum valid input high level (≥0.7×VCC). |
| Output Voltage Range | –0.5 V to VDD + 0.5 V - enables robust interfacing with overvoltage-tolerant receivers and supports negative transient margin. |
| Input Signal Swing | VSS to ≥0.7×VCC - ensures reliable logic recognition even with degraded low-voltage drive or series resistance. |
| Operating Temperature | –55 °C to +125 °C - qualified for extended industrial and automotive under-hood environments. |
| Package Type | TSSOP-16 (PW) - 4.4 mm × 5.0 mm footprint with 0.65 mm pitch; optimized for high-density PCB layouts and reflow compatibility. |
Pinout & Package
TSSOP-16 package (PW), 4.4 mm × 5.0 mm body, 0.65 mm lead pitch, 1.2 mm max height, exposed pad not present, moisture sensitivity level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 12, 13, 15, 16 | Input/Output Channel Terminals (A1–B1, A2–B2, A3–B3, A4–B4) | Paired I/O pins per channel; A-side referenced to VCC/VSS, B-side referenced to VDD/VSS; non-inverting translation path. |
| 3, 6, 10, 14 | Channel Enable / Input Ground Reference | Direct connection to VSS (GND); no internal pull-down; must be hard-connected to system ground for proper channel operation. |
| 7 | VSS | Common ground reference for all low-side inputs and internal circuitry; must be tied to lowest system potential. |
| 8 | VDD | High-side supply rail; powers all output drivers; defines upper output voltage limit and noise immunity. |
| 11 | VCC | Low-side supply rail; powers all input buffers; sets input logic thresholds and internal bias points. |
Key Features
| Feature | Design Value |
|---|---|
| Unrestricted Power-Up Sequencing | Enables safe integration into systems where VDD, VCC, and control signals power up asynchronously-no sequencing circuitry or reset delays needed. |
| Bidirectional Level Translation Mode | Supports both low-to-high (e.g., 3.3 V → 5 V) and high-to-low (e.g., 5 V → 3.3 V) translation by operating with VCC > VDD, eliminating need for separate direction-specific parts. |
| Rail-Extended Output Swing | Outputs swing –0.5 V to VDD + 0.5 V, improving noise margin against crosstalk and enabling direct interface with legacy TTL or overvoltage-tolerant receivers. |
| Input Signal Tolerance Beyond Supplies | Accepts input signals exceeding VCC and VDD (within absolute max ratings), simplifying interface with open-drain or floating-source peripherals without clamping diodes. |
| Industrial Temperature Range | Rated from –55 °C to +125 °C, supporting deployment in motor control, power conversion, and outdoor industrial equipment without derating. |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
|
Use Scenario: Interfacing 3.3 V microcontroller GPIOs with 12 V solenoid drivers and sensor feedback lines in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Bidirectional level shifter translating control signals and status returns between mixed-voltage domains without timing skew or added propagation delay. Use Value: Eliminates discrete resistor-divider networks and external transistors, reducing BOM count and board area while maintaining deterministic signal integrity across temperature. |
Use Scenario: Connecting CAN microcontroller I/O (3.3 V) to 5 V LIN transceivers and 12 V lamp driver ICs in vehicle door modules. IC Role / Device Role / Timing Role: Voltage-level translator ensuring logic compatibility between sub-systems operating at different supply rails, with no impact on bus timing budgets. Use Value: Enables single-chip translation of four independent signal pairs, reducing interconnect complexity and improving EMI resilience versus discrete solutions. |
| Mixed-Voltage Sensor Fusion Systems | Legacy Equipment Retrofit Interfaces |
|
Use Scenario: Integrating modern low-power 1.8 V/3.3 V environmental sensors (I²C, SPI) with existing 5 V data acquisition hardware in factory automation nodes. IC Role / Device Role / Timing Role: Non-inverting level shifter preserving signal polarity and timing alignment across voltage domains for synchronous serial protocols. Use Value: Maintains full protocol compliance (e.g., I²C rise/fall time specs) without external pull-ups or active buffering, minimizing latency and jitter. |
Use Scenario: Upgrading aging 5 V-only instrumentation with new 3.3 V FPGA-based processing units while retaining legacy 5 V analog front-ends and display drivers. IC Role / Device Role / Timing Role: Voltage translator bridging logic families across generations, supporting both control and status signal exchange. Use Value: Avoids redesign of legacy PCBs by providing drop-in-compatible level translation with identical pin mapping and timing behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar level-shifting applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC4245APWR | Octal bus transceiver with direction control; requires explicit DIR pin and single-supply operation (VCCA/VCCB only); no VSS-referenced input tolerance. | Best suited for bidirectional data buses with centralized direction management; less flexible for asynchronous mixed-rail point-to-point links. | Select when translating multi-bit parallel buses with shared direction control and tighter timing budgets than CD40109BPWRG4's 100 ns typical propagation delay. |
| TXS0104EPWR | Auto-direction-sensing 4-bit translator; open-drain I/O with internal pull-ups; supports 1.2 V to 3.3 V translation only; no support for VCC > VDD mode. | Ideal for I²C/SMBus and low-voltage UART interfaces; unsuitable for driving 5 V/12 V loads or high-current digital signals. | Choose for ultra-low-voltage I²C expansion where automatic direction detection eliminates control logic, but avoid when interfacing with higher-voltage logic or driving capacitive loads >20 pF. |
Compared with SN74LVC4245APWR and TXS0104EPWR, the CD40109BPWRG4 uniquely supports unrestricted supply sequencing, rail-extended output swing, and true bidirectional translation without direction control or auto-sensing-making it optimal for robust, low-complexity mixed-voltage interconnects in harsh environments.
Availability
CD40109BPWRG4 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and mixed-voltage sensor fusion systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD40109BPWRG4 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 specializing in analog, embedded processing, and connectivity technologies, with leadership in industrial, automotive, and power management markets.
The CD40109BPWRG4 belongs to TI's legacy CMOS logic portfolio designed for robust, wide-supply-range level translation in mission-critical industrial and automotive systems where reliability and supply-chain stability are paramount.
FAQ
What is the absolute maximum rating for input voltage on CD40109BPWRG4?
The CD40109BPWRG4 allows input signals to exceed both VCC and VDD, provided they remain within the device's absolute maximum ratings: –0.5 V to VDD + 0.5 V. This tolerance eliminates the need for external clamping diodes when interfacing with open-drain or floating sources, and is explicitly confirmed in the Harris Semiconductor datasheet SCHS099B.
Can CD40109BPWRG4 operate with VCC greater than VDD?
Yes, the CD40109BPWRG4 supports high-to-low level shifting when VCC > VDD. In this configuration, the low-side supply powers the input stage and the high-side supply is reduced, enabling translation from higher-voltage logic (e.g., 5 V) to lower-voltage logic (e.g., 3.3 V). This dual-mode capability is a defining feature of the CD40109BPWRG4 and is documented in the January 2003 revision of its datasheet.
What is the recommended minimum input high voltage for CD40109BPWRG4?
The CD40109BPWRG4 requires input signals to swing to at least 0.7 × VCC to guarantee reliable logic-high recognition. For example, with VCC = 3.3 V, the minimum valid input high is 2.31 V. This threshold is process-stable and independent of VDD, making the CD40109BPWRG4 tolerant of marginal drive strength or series impedance in source circuits.
Does CD40109BPWRG4 require external pull-up or pull-down resistors?
No, the CD40109BPWRG4 does not require external pull-up or pull-down resistors. Its CMOS input structure is fully buffered and internally biased; all inputs are actively driven, and outputs are push-pull. External resistors are unnecessary for basic level translation, though system-level pull-ups may still be used for bus contention management outside the CD40109BPWRG4's scope.
Is CD40109BPWRG4 RoHS compliant and what is its MSL rating?
Yes, CD40109BPWRG4 is RoHS compliant (lead finish: NIPDAU) and has a moisture sensitivity level (MSL) rating of Level-1 at 260 °C peak reflow. This means it can be stored indefinitely at ambient conditions without baking prior to assembly, simplifying manufacturing logistics for high-volume SMT lines handling TSSOP-16 packages.
CD40109BPWRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Translator Type:
- Voltage Level
- Channel Type:
- Unidirectional
- Number of Circuits:
- 4
- Channels per Circuit:
- 1
- Voltage - VCCA:
- 3 V ~ 18 V
- Voltage - VCCB:
- 3 V ~ 18 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- -
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP (0.173", 4.40mm Width)
CD40109BPWRG4 FAQ
1.How can I place an order for CD40109BPWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD40109BPWRG4 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 CD40109BPWRG4 reliable?
The price and inventory of CD40109BPWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD40109BPWRG4 is usually 5 days.
3.What payment methods are accepted for CD40109BPWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD40109BPWRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD40109BPWRG4?
CD40109BPWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD40109BPWRG4 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 CD40109BPWRG4?
For technical support, including CD40109BPWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD40109BPWRG4 requirements.
6.How does Aetrix verify that CD40109BPWRG4 is sourced from the original manufacturer or authorized distributors?
All CD40109BPWRG4 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 CD40109BPWRG4 meets industry standards.
7.What is the process for return or replacement of CD40109BPWRG4?
All CD40109BPWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with CD40109BPWRG4, 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 CD40109BPWRG4 part is unused and in its original packaging.
Return procedure for CD40109BPWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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