Overview
The MC14543BDR2G is a BCD-to-seven segment latch/decoder/driver integrated circuit designed by onsemi. It is specifically tailored for use with liquid crystal readouts but is also compatible with other types of displays such as LED, incandescent, gas discharge, and fluorescent displays. Constructed with complementary MOS (CMOS) enhancement mode devices, this chip provides the functions of a 4-bit storage latch and an 8421 BCD-to-seven segment decoder and driver. It features inputs for phase (Ph), blanking (BI), and latch disable (LD), allowing for versatile control over the display output.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| DC Supply Voltage Range | VDD | -0.5 to +18.0 | V |
| Input Voltage Range, All Inputs | Vin | -0.5 to VDD + 0.5 | V |
| Operating Temperature Range | TA | -55 to +125 | °C |
| Storage Temperature Range | Tstg | -65 to +150 | °C |
| Maximum Continuous Output Drive Current (Source or Sink) | IOHmax, IOLmax | 10 | mA |
| Maximum Continuous Output Power (Source or Sink) | POHmax, POLmax | 70 | mW |
| Output Voltage “0” Level | VOL | 0.05 (at VDD = 5.0, 10, 15 V) | V |
| Output Voltage “1” Level | VOH | 4.95 (at VDD = 5.0 V), 9.95 (at VDD = 10 V), 14.95 (at VDD = 15 V) | V |
Key Features
- Latch Storage of Code
- Blanking Input
- Readout Blanking on All Illegal Input Combinations
- Direct LED (Common Anode or Cathode) Driving Capability
- Supply Voltage Range = 3.0 V to 18 V
- Capable of Driving 2 Low-power TTL Loads, 1 Low-power Schottky TTL Load or 2 HTL Loads Over the Rated Temperature Range
- Pin-for-Pin Replacement for CD4056A (with Pin 7 Tied to VSS)
- Chip Complexity: 207 FETs or 52 Equivalent Gates
- NLV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC-Q100 Qualified and PPAP Capable
- Pb-Free and RoHS Compliant
Applications
- Instrument Display Driver (e.g., counter, DVM)
- Computer/Calculator Display Driver
- Cockpit Display Driver
- Clock, Watch, and Timer Uses
Q & A
- What is the primary function of the MC14543BDR2G?
The MC14543BDR2G is a BCD-to-seven segment latch/decoder/driver designed for use with liquid crystal readouts and other display types.
- What is the supply voltage range for the MC14543BDR2G?
The supply voltage range is from 3.0 V to 18 V.
- What types of displays can the MC14543BDR2G drive?
The device can drive liquid crystal (LC), light-emitting diode (LED), incandescent, gas discharge, and fluorescent readouts.
- What are the key inputs for controlling the display output?
The key inputs include phase (Ph), blanking (BI), and latch disable (LD).
- Is the MC14543BDR2G Pb-Free and RoHS Compliant?
- What are some common applications of the MC14543BDR2G?
- Can the MC14543BDR2G replace the CD4056A?
- What is the operating temperature range of the MC14543BDR2G?
- What is the maximum continuous output drive current?
- Is the MC14543BDR2G suitable for automotive applications?
