Overview
The CD4543BEG4, produced by Texas Instruments, is a BCD-to-seven segment latch/decoder/driver designed primarily for liquid-crystal display (LCD) applications. It is also capable of driving light-emitting diode (LED), incandescent, gas-discharge, and fluorescent displays. This device is functionally similar to and serves as a direct replacement for the CD4056B when pin 7 is connected to VSS, but it differs in having a display blanking capability instead of a level-shifting function and requires only one power supply.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 16-lead dual-in-line plastic packages (PDIP), 16-lead small-outline packages (SOIC), and 16-lead thin shrink small-outline packages (TSSOP) |
| Operating Temperature Range (°C) | -55 to 125 |
| Supply Voltage (V) | 3V to 18V |
| Pin Count | 16 |
| Number of Outputs | 7 |
| Maximum Input Current | 1 µA at 18 V over full package-temperature range; 100 nA at 18 V and 25°C |
| Noise Margin | 1 V at VDD = 5 V, 2 V at VDD = 10 V, 2.5 V at VDD = 15 V |
| Quiescent Current Test | 100% tested for quiescent current at 20 V |
Key Features
- Display blanking of all illegal input combinations
- Latch storage of code
- Capability of driving two low power TTL loads, two HTL loads, or one low power Schottky load over the full rated-temperature range
- Pin-for-pin replacement for the CD4056B (with pin 7 tied to VSS)
- Direct LED driving capability
- 100% tested for quiescent current at 20 V
- Meets all requirements of JEDEC Tentative Standard No. 13B, 'Standard Specifications for Description of B Series CMOS Devices'
Applications
- Instrument display driver
- Dashboard display driver
- Computer/calculator display driver
- Timing device driver (clocks, watches, timers)
Q & A
- What is the primary function of the CD4543BEG4?
The CD4543BEG4 is a BCD-to-seven segment latch/decoder/driver designed primarily for liquid-crystal display (LCD) applications.
- What types of displays can the CD4543BEG4 drive?
The CD4543BEG4 can drive LCD, LED, incandescent, gas-discharge, and fluorescent displays.
- What is the operating temperature range of the CD4543BEG4?
The operating temperature range is -55°C to 125°C.
- What are the supply voltage requirements for the CD4543BEG4?
The supply voltage ranges from 3V to 18V.
- How many pins does the CD4543BEG4 have?
The CD4543BEG4 has 16 pins.
- What is the maximum input current for the CD4543BEG4?
The maximum input current is 1 µA at 18 V over the full package-temperature range; 100 nA at 18 V and 25°C.
- Does the CD4543BEG4 meet any specific industry standards?
Yes, it meets all requirements of JEDEC Tentative Standard No. 13B, 'Standard Specifications for Description of B Series CMOS Devices'.
- Can the CD4543BEG4 replace the CD4056B?
Yes, it can serve as a direct replacement for the CD4056B when pin 7 is connected to VSS.
- What is the noise margin for the CD4543BEG4?
The noise margin is 1 V at VDD = 5 V, 2 V at VDD = 10 V, and 2.5 V at VDD = 15 V.
- What are some common applications of the CD4543BEG4?
Common applications include instrument display drivers, dashboard display drivers, computer/calculator display drivers, and timing device drivers.
