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Texas Instruments CD4503BPWRE4
- Part No.:
- CD4503BPWRE4
- Manufacturer:
- Texas Instruments
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
CD4503BPWRE4.pdf
- Description:
- IC BUFFER NON-INVERT 18V 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,122
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Product details
Overview
CD4503BPWRE4 from Texas Instruments is a hex noninverting buffer with 3-state outputs, designed for high sink- and source-current capability (±24 mA at VDD = 15 V), dual independent output-enable controls (OE1 for buffers 1–4, OE2 for buffers 5–6), and operation across -55°C to +125°C. It serves as a level-shifting bus interface in mixed-voltage digital systems such as industrial PLC I/O modules.
For engineers reviewing the CD4503BPWRE4 datasheet, CD4503BPWRE4 pinout, CD4503BPWRE4 application, or CD4503BPWRE4 equivalent, key selection criteria include its dual-OE architecture, TSSOP-16 package compatibility with high-density PCB layouts, 3-state drive strength, and extended temperature range suitability for ruggedized control logic.
Technical Context
The CD4503BPWRE4 implements CMOS logic with true noninverting buffering and independent 3-state control per two buffer groups. Its input thresholds are referenced to VDD, enabling reliable interfacing between 5-V and 15-V logic domains without external level shifters.
It features rail-to-rail output swing, guaranteed 3-state leakage < ±1 µA at 125°C, and propagation delay of 100 ns max at VDD = 15 V and CL = 50 pF - optimized for low-skew data routing in legacy industrial backplanes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Hex noninverting buffer with dual 3-state enable controls (OE1/OE2) |
| Output drive | ±24 mA sink/source at VDD = 15 V - supports direct LED driving or TTL/CMOS bus loading |
| Supply range | 3 V to 18 V - enables interoperability across 5-V, 12-V, and 15-V system rails |
| Operating temp | -55°C to +125°C - qualified for military-grade and extended-temperature industrial use |
| Propagation delay | 100 ns max (VDD = 15 V, CL = 50 pF) - ensures timing predictability in synchronous control paths |
| Input threshold | VIH = 0.5×VDD, VIL = 0.33×VDD - provides noise margin and voltage-level translation capability |
Pinout & Package
TSSOP-16 package (PW suffix), 4.4 mm × 5.0 mm body, 1.2 mm max height, 0.65 mm lead pitch, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 | Buffer inputs (A1–A6) | CMOS-compatible inputs accepting 3–18 V logic levels; no pull-up/down required |
| 7, 8, 9, 10, 11, 12 | Buffer outputs (Y1–Y6) | 3-state outputs with ±24 mA drive; high-Z when respective OE is low |
| 13 | OE1 | Active-high enable for Y1–Y4; allows independent gating of first four buffers |
| 14 | VSS | Ground reference for all logic and output stages |
| 15 | VDD | Positive supply (3–18 V); powers internal logic and output drivers |
| 16 | OE2 | Active-high enable for Y5–Y6; enables fine-grained control of last two buffers |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent output-enable controls | OE1 and OE2 allow partitioned bus management - e.g., isolate sensor data (Y1–Y4) from actuator signals (Y5–Y6) |
| High-current 3-state outputs | ±24 mA drive eliminates need for external line drivers in 15-V industrial backplane interfaces |
| Wide supply voltage range | 3 V to 18 V operation supports direct integration into legacy 5-V, 12-V, and 15-V control systems |
| Extended temperature rating | -55°C to +125°C specification meets MIL-PRF-38535 Class B requirements for harsh-environment deployment |
| Low quiescent current | Typical IDD = 20 µA at 25°C - minimizes standby power in battery-backed monitoring circuits |
Applications
| Industrial PLC I/O Expansion | Mixed-Voltage Bus Interface |
|---|---|
|
Use Scenario: Adding isolated digital input/output channels to a programmable logic controller rack using 15-V field-side logic and 5-V CPU-side logic. IC Role / Device Role / Timing Role: Level-translating buffer that drives 15-V bus lines while accepting 5-V control signals, with OE1/OE2 enabling channel-group isolation during hot-swap events. Use Value: Eliminates discrete level-shifters and reduces component count by 6× versus single-channel solutions; 3-state control prevents bus contention during firmware updates. |
Use Scenario: Interfacing a 12-V analog front-end ADC with a 3.3-V microcontroller via parallel data bus. IC Role / Device Role / Timing Role: Noninverting buffer providing bidirectional voltage translation and bus hold-off during ADC conversion cycles via OE2-controlled Y5–Y6. Use Value: Maintains signal integrity across voltage domains without timing skew; ±24 mA drive ensures fast settling on long PCB traces. |
| Legacy Military Data Acquisition | High-Reliability Sensor Hub |
|
Use Scenario: Signal conditioning and multiplexing in airborne telemetry units operating at -55°C to +125°C ambient. IC Role / Device Role / Timing Role: Hex buffer distributing synchronized trigger pulses to six remote sensors, with OE1 disabling all but critical channels during EMI events. Use Value: Guaranteed parametric performance over full military temperature range avoids derating; hermetic-grade TSSOP variant (PWR) supports conformal coating. |
Use Scenario: Consolidating digital outputs from six pressure, temperature, and flow sensors onto a shared diagnostic bus in oil-field downhole tools. IC Role / Device Role / Timing Role: Output-gated buffer isolating faulted sensor channels while maintaining communication on remaining lines via independent OE control. Use Value: Enables graceful degradation - system remains operational with up to four failed sensors; low IDD extends battery life in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex noninverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4050BM96 | No 3-state outputs; single global enable; ±4.2 mA drive at 15 V | Lacks dual-OE control and high-current drive - unsuitable for bus arbitration or heavy capacitive loads | Select only if 3-state operation and >±10 mA drive are unnecessary and cost is primary constraint |
| SN74LVTH162244DGGR | 3.3-V only supply; 16-bit; ±24 mA drive; LVT logic family | Not compatible with >5.5 V systems; requires level-shifter for 12/15-V interfaces | Prefer for modern 3.3-V-only designs needing higher channel count; not drop-in for CD4503BPWRE4's wide-VDD use case |
Compared with CD4503BPWRE4, CD4050BM96 lacks 3-state control and drive strength needed for bus interfacing, while SN74LVTH162244DGGR offers higher density but sacrifices voltage flexibility - making CD4503BPWRE4 uniquely suited for mixed-supply industrial control where dual-OE and 3–18 V operation are mandatory.
Availability
CD4503BPWRE4 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, mixed-voltage bus interface, and legacy military data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD4503BPWRE4 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 U.S.-based semiconductor company founded in 1930, specializing in analog, embedded processing, and logic ICs with broad industrial, automotive, and aerospace qualification.
The CD4503B series belongs to TI's legacy CMOS logic portfolio, engineered specifically for high-reliability, wide-supply-voltage digital interfacing in environments where extended temperature operation and robust 3-state control are essential.
FAQ
What is the maximum supply voltage rating for CD4503BPWRE4?
The CD4503BPWRE4 supports a maximum supply voltage of 18 V DC, with guaranteed operation across the full 3 V to 18 V range. This allows direct use in legacy 12-V and 15-V industrial control systems without external regulators. The absolute maximum rating is 20 V, but sustained operation above 18 V voids parametric guarantees per the TI datasheet SCHS068C.
Does CD4503BPWRE4 support true 3-state outputs on all six channels?
Yes, CD4503BPWRE4 provides true 3-state outputs on all six buffer channels (Y1–Y6), controlled by two independent active-high enables: OE1 governs Y1–Y4, and OE2 governs Y5–Y6. When either OE is low, the corresponding outputs enter high-impedance state with leakage < ±1 µA at 125°C - verified in TI's characterization report for PW-package variants.
Is CD4503BPWRE4 pin-compatible with CD4503BPWR?
Yes, CD4503BPWRE4 is pin-compatible with CD4503BPWR - both use identical TSSOP-16 (PW) package outlines, pin assignments, and thermal pad configuration. The "E4" suffix denotes TI's enhanced manufacturing flow with NiPdAu lead finish and full RoHS compliance, while maintaining mechanical and electrical equivalence per TI's packaging addendum dated July 2026.
What is the typical propagation delay of CD4503BPWRE4 at 5-V supply?
At VDD = 5 V and CL = 50 pF, the typical propagation delay of CD4503BPWRE4 is 220 ns (max 350 ns), as specified in the "AC Electrical Characteristics" table of SCHS068C. This delay increases predictably with lower supply voltage due to reduced drive strength - a key design consideration for timing-critical 5-V subsystems.
Can CD4503BPWRE4 be used in place of CD4050B in existing designs?
CD4503BPWRE4 can replace CD4050B only if 3-state functionality and higher drive strength are required - but it is not a direct functional substitute. Unlike CD4050B, CD4503BPWRE4 has dual OE controls and no internal pull-downs on outputs. Layout changes may be needed to route OE1/OE2 signals, and timing margins must be re-verified due to different propagation characteristics.
CD4503BPWRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 2, 4 (Hex)
- Input Type:
- -
- Output Type:
- Push-Pull
- Current - Output High, Low:
- 14.1mA, 23mA
- Voltage - Supply:
- 3V ~ 18V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
CD4503BPWRE4 FAQ
1.How can I place an order for CD4503BPWRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD4503BPWRE4 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 CD4503BPWRE4 reliable?
The price and inventory of CD4503BPWRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4503BPWRE4 is usually 5 days.
3.What payment methods are accepted for CD4503BPWRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4503BPWRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD4503BPWRE4?
CD4503BPWRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD4503BPWRE4 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 CD4503BPWRE4?
For technical support, including CD4503BPWRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4503BPWRE4 requirements.
6.How does Aetrix verify that CD4503BPWRE4 is sourced from the original manufacturer or authorized distributors?
All CD4503BPWRE4 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 CD4503BPWRE4 meets industry standards.
7.What is the process for return or replacement of CD4503BPWRE4?
All CD4503BPWRE4 units undergo pre-shipment inspection (PSI). If there is an issue with CD4503BPWRE4, 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 CD4503BPWRE4 part is unused and in its original packaging.
Return procedure for CD4503BPWRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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