Overview
The CD4543BE 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. It differs from the CD4056B in that it has 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), 16-lead thin shrink small-outline packages (TSSOP) |
| Number of Pins | 16 |
| Operating Temperature Range | -55°C to 125°C |
| Supply Voltage | 5 V, 10 V, 15 V |
| Operating Supply Current | 40 nA |
| Quiescent Current | 100 μA at 20 V |
| 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 |
| Propagation Delay | 400 ns |
| Turn On Delay Time | 1.2 μs |
| Load Capacitance | 50 pF |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
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 CD4543BE?
The CD4543BE is a BCD-to-seven segment latch/decoder/driver designed primarily for liquid-crystal display (LCD) applications and also capable of driving LED, incandescent, gas-discharge, and fluorescent displays.
- What are the key differences between the CD4543BE and the CD4056B?
The CD4543BE has a display blanking capability instead of a level-shifting function and requires only one power supply, whereas the CD4056B requires two power supplies in level-shifting mode.
- What are the operating temperature ranges for the CD4543BE?
The operating temperature range for the CD4543BE is -55°C to 125°C.
- What are the supply voltage options for the CD4543BE?
The CD4543BE can operate with supply voltages of 5 V, 10 V, and 15 V.
- What is the quiescent current of the CD4543BE?
The quiescent current of the CD4543BE is 100 μA at 20 V.
- What is the maximum input current for the CD4543BE?
The maximum input current for the CD4543BE is 1 µA at 18 V over the full package-temperature range; 100 nA at 18 V and 25°C.
- What is the noise margin of the CD4543BE?
The noise margin of the CD4543BE is 1 V at VDD = 5 V, 2 V at VDD = 10 V, and 2.5 V at VDD = 15 V.
- What are the packaging options for the CD4543BE?
The CD4543BE is available in 16-lead dual-in-line plastic packages (PDIP), 16-lead small-outline packages (SOIC), and 16-lead thin shrink small-outline packages (TSSOP).
- Is the CD4543BE RoHS compliant?
Yes, the CD4543BE is RoHS compliant and meets the current EU RoHS requirements.
- What is the moisture sensitivity level (MSL) of the CD4543BE?
The moisture sensitivity level (MSL) of the CD4543BE is 1 (Unlimited).
