CD4503BPWE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
CD4503BPWE4 is a Texas Instruments CMOS hex non-inverting buffer from the 4000-series logic family with three-state outputs and active-low enable control. It operates across a 3 V to 15 V supply range, supporting 50 pF load capacitance per channel. Available in a 16-pin TSSOP package with RoHS compliance and worldwide stock.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD4503BPWE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD4503BPWE4?
- Hex non-inverting buffer with three-state outputs enabling direct connection to shared data buses without signal contention
- Wide supply voltage range of 3 V to 15 V allowing compatibility with both legacy 5 V CMOS systems and modern 3.3 V designs
- Active-low enable input for simple bus control with a single logic line, reducing control overhead in multi-channel designs
- 50 pF rated load capacitance per channel supporting standard PCB trace driving without external buffering
What is CD4503BPWE4 used for?
CD4503BPWE4 is commonly used as a bus driver or signal buffer in microcontroller expansion circuits, enabling multiple peripherals to share a common data bus with three-state isolation. It also finds use in industrial control panels for driving multiple sensor signal lines from a single control port. The device is well-suited for level translation and fanout buffering in mixed-voltage logic systems operating between 3 V and 15 V.
What are the specifications of CD4503BPWE4?
| YTEOL | 0 |
| Additional Feature | ONE FUNCTION WITH TWO BITS |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | 4000/14000/40000 |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.023A |
| Number of Bits | 4 |
| Number of Functions | 2 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.6mA |
| Prop. Delay@Nom-Sup | 150ns |
| Propagation Delay (tpd) | 150ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 18V |
| Supply Voltage-Min (Vsup) | 3V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Where can I find the CD4503BPWE4 datasheet?
CD4503BPWE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD4503BPWE4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What supply voltage range does CD4503BPWE4 support and how does this affect system compatibility?
CD4503BPWE4 operates from 3 V to 15 V supply voltage, making it compatible with 5 V TTL-level systems, standard 5 V CMOS logic, and modern 3.3 V microcontroller designs. This wide range simplifies integration in mixed-voltage environments without additional level-shifting components.
How does the three-state output of CD4503BPWE4 help when connecting multiple drivers to a shared data bus?
The three-state outputs allow CD4503BPWE4 to disconnect all 6 output channels from the bus when the active-low enable pin is deasserted, presenting a high-impedance state. This prevents bus contention when multiple drivers share the same 8-bit or 16-bit bus, a common requirement in 50 pF loaded bus architectures.
What is the maximum output current that CD4503BPWE4 can sink per channel?
Each output channel can sink up to 23 mA (I_OL = 0.023 A) at the rated supply voltage, providing adequate drive capability for standard CMOS loads and short PCB traces. This current level supports reliable switching of buffered signals at typical propagation delays specified for the 4000-series family.
Is CD4503BPWE4 a suitable drop-in replacement for older ceramic-package 4503B variants in a repair scenario?
CD4503BPWE4 is functionally identical to other CD4503B variants and maintains the same 3 V to 15 V supply range, logic levels, and pin functions as the original 16-pin DIP versions. However, it uses a 16-pin TSSOP surface-mount package, so a PCB adapter or footprint change is needed when replacing through-hole DIP parts in legacy board repairs.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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