參數(shù)資料
型號: HD74HC4543
廠商: Hitachi,Ltd.
英文描述: BCD-to-Seven Segment Latch/Decoder/Driver
中文描述: BCD碼到七段鎖存器/解碼器/驅(qū)動器
文件頁數(shù): 1/10頁
文件大小: 68K
代理商: HD74HC4543
HD74HC4543
BCD-to-Seven Segment Latch/Decoder/Driver
Description
This circuit contains a 4-bit latch, BCD-to-7 segment decoder, and 7 outpt drivers. Data on the input pins
flow through to the output when the Latch Disable (LE) is high and is latched on the high to low transition
of the LE input. The Phase input (Ph) controls the polarity of the 7 segment outputs. when Ph is low the
outputs are true 7 segment, and when Ph is high the outputs are inverted 7 segment. When the Phase input
is driven by a liquid crystal display (LCD) backplane waveform the segment pins output the correct
segment waveform for proper LCD AC drive voltages.
In addition a Blanking input (BI) is provided, which will blank the display.
Features
High Speed Operation: t
pd
(A, B, C, D to a – g) = 33 ns typ (C
L
= 50 pF)
High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: V
CC
= 2 to 6 V
Low Input Current: 1 μA max
Low Quiescent Supply Current: I
CC
(static) = 4 μA max (Ta = 25°C)
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