CD74HC4543

CD74HC4543 Data sheet acquired from Harris Semiconductor SCHS217B February 1998 - Revised July 2003 High-Speed CMOS Logic BCD to 7-Segment Latch/Decoder/Driver for LCDs [ /Title (CD74 HC454 3) /Subject (HighSpeed CMOS Logic BCDto-7 Features Description 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 . . . -55oC to 125oC Balanced Propagation Delay and Transition Times Significant Power Reduction Compared to LSTTL Logic ICs The CD74HC4543 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.) HC Types - 2V to 6V Operation - High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V Ordering Information PART NUMBER ...