CD74HC4543

用于 LCD 的高速 CMOS 逻辑 BCD 至 7 段锁存器/解码器/驱动器

The high-speed silicon-gate device is a BCD to 7-segment latch/decoder/driver designed primarily for directly driving liquid-crystal displays. It has an active-high disable input LD, an active-high blanking input BI and a phase input PH to which a square wave is applied for liquid-crystal applications. This square wave also is applied to the backplane of the liquid-crystal display.

This device also can be used, in conjunction with current amplifying devices, for driving LEDs, incandescent, fluorescent, and gas-discharge displays. For these applications the phase input provides a means to obtain active-high or active-low segment outputs. See the Function Table.

.

Input Latches for BCD Code Storage

.

Blanking Capability

.

Phase Input for Complementing Outputs

.

Fanout Over Temperature Range

.

Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

.

Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

.

Wide Operating Temperature Range . . . -55°C to 125°C

.

Balanced Propagation Delay and Transition Times

.

Significant Power Reduction Compared to LSTTL Logic ICs

.

HC Types

.

2V to 6V Operation

.

High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V