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HD74HC4543 - BCD-to-Seven Segment Latch/Decoder/Driver

Description

This circuit contains a 4-bit latch, BCD-to-7 segment decoder, and 7 output 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.

Features

  • High Speed Operation: tpd (A, B, C, D to a.
  • g) = 33 ns typ (CL = 50 pF).
  • High Output Current: Fanout of 10 LSTTL Loads.
  • Wide Operating Voltage: VCC = 2 to 6 V.
  • Low Input Current: 1 µA max.

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Datasheet preview – HD74HC4543

Datasheet Details

Part number HD74HC4543
Manufacturer Renesas
File Size 245.73 KB
Description BCD-to-Seven Segment Latch/Decoder/Driver
Datasheet download datasheet HD74HC4543 Datasheet
Additional preview pages of the HD74HC4543 datasheet.

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Full PDF Text Transcription

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HD74HC4543 BCD-to-Seven Segment Latch/Decoder/Driver REJ03D0655-0200 (Previous ADE-205-544) Rev.2.00 Mar 30, 2006 Description This circuit contains a 4-bit latch, BCD-to-7 segment decoder, and 7 output 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.
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