CD4543BE Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
CD4543BE is a CMOS BCD-to-Seven-Segment Latch/Decoder/Driver IC for liquid-crystal displays, supporting 16-pin DIP package with 50 pF load capacitance and 1.5 mA output current. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD4543BE 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
Key Features
- CMOS BCD-to-7-segment latch/decoder/driver with integrated latch for direct LCD interfacing
- Supports 50 pF load capacitance and up to 1.5 mA output current per segment
- 16-pin DIP package (R-PDIP-T16) with RoHS-compliant e4 JESD-609 rating for easy PCB assembly
Applications
The CD4543BE is widely used in digital display systems such as calculators, clocks, and industrial meters where BCD-encoded data must be converted to seven-segment LCD outputs. Its integrated latch allows stable display retention without continuous microcontroller intervention, making it ideal for battery-powered and low-power embedded designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | 4000/14000/40000 |
| Input Conditioning | LATCHED |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | SEVEN SEGMENT DECODER/DRIVER |
| Max I(ol) | 0.0015A |
| Number of Bits | 7 |
| Number of Functions | 1 |
| Output Polarity | CONFIGURABLE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 3mA |
| Prop. Delay@Nom-Sup | 400ns |
| Propagation Delay (tpd) | 1200ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 18V |
| Supply Voltage-Min (Vsup) | 3V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| ## CD4543BE Alternates Showing results | Image |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia, Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD4543BE:
suggested
Frequently Asked Questions
What output current can the CD4543BE drive per segment, and is it sufficient for typical LCD panels?
The CD4543BE provides a maximum output sink current (I_OL) of 1.5 mA per segment. Most standard LCD panels require only 0.1 mA to 1 mA per segment, so the 1.5 mA rating is sufficient for the vast majority of common seven-segment liquid-crystal display modules without external drivers.
How does the integrated latch in CD4543BE benefit microcontroller-based display designs?
The on-chip latch in the CD4543BE holds the BCD input data and maintains a stable seven-segment output without continuous microcontroller intervention. This reduces bus overhead and enables multiplexed display refresh cycles, freeing CPU cycles in embedded systems operating at voltages from 3 V to 15 V.
What load capacitance specification does CD4543BE support, and how does it affect signal integrity?
The CD4543BE is rated for a load capacitance (CL) of 50 pF per output pin. Staying within this 50 pF limit ensures specified propagation delay and output drive performance at the rated 1.5 mA sink current, preventing signal degradation on PCB traces connected to seven-segment LCD segments.
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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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