Philips 74HCT4543
The 74HC/HCT4543 are high-speed Si-gate CMOS devices and are pin compatible with “4543” of the “4000B” series. They are specified in compliance with JEDEC standard no. The 74HC/HCT4543 are BCD to 7-segment latch/decoder/drivers for liquid crystal displays.| Part No. | 74HCT4543 |
|---|---|
| Datasheet | 74HCT4543 Download |
| Manufacturer |  Philips |
| Description | BCD to 7-segment latch/decoder/driver |
| Buy | Stock & Price |
FEATURES
● Latch storage of BCD inputs● Blanking inputs
● Output capability: non-standard
● ICC category: MSI
GENERAL DESCRIPTION
7A. They have four address inputs (D0 to D3), an active HIGH latch disable input (LD), an active HIGH blanking input (BI), an active HIGH phase input (PH) and seven buffered segment outputs (Qa to Qg). The “4543” provides the function of a 4-bit storage latch and an 8-4-2-1 BCD to 7-segment decoder driver. The “4543” can invert the logic levels of the output combination. The phase (PH), blanking (BI) and latch disable (LD) inputs are used to reverse the function table phase, blank the display and store a BCD code, respectively. For liquid crystal displays a square-wave is applied to PH and the electrical common back-plane of the display. The outputs of the “4543” are directly connected to the segments of the liquid crystal. QUICK REFERENCE DATA GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns SYMBOL PARAMETER CONDITIONS tPHL/ tPLH CI CPD propagation delay Dn to Qn LD to Qn BI to Qn input capacitance power dissipation capacitance per package CL = 15 pF; VCC = 5 V notes 1 and 2 Notes 1.
