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HEF4543B डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - BCD to 7-segment latch/decoder/driver - Philips

भाग संख्या HEF4543B
समारोह BCD to 7-segment latch/decoder/driver
मैन्युफैक्चरर्स Philips 
लोगो Philips लोगो 
पूर्व दर्शन
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HEF4543B pdf
Philips Semiconductors
BCD to 7-segment latch/decoder/driver
Product specification
HEF4543B
MSI
DESCRIPTION
The HEF4543B is a BCD to 7-segment
latch/decoder/driver for liquid crystal and LED displays. It
has four address inputs (DA to DD), an active HIGH latch
disable input (LD), an active HIGH blanking input (BI), an
active HIGH phase input (PH) and seven buffered
segment outputs (Oa to Og).
The circuit provides the function of a 4-bit storage latch
and an 8-4-2-1 BCD to 7-segment decoder/driver. It 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 device are directly connected to the
segments of the liquid crystal.
Fig.2 Pinning diagram.
Fig.1 Functional diagram.
PINNING
DA to DD
PH
BI
LD
Oa to Og
address (data) inputs
phase input (active HIGH)
blanking input (active HIGH)
latch disable input (active HIGH)
segment outputs
HEF4543BP(N): 16-lead DIL; plastic (SOT38-1)
HEF4543BD(F): 16-lead DIL; ceramic (cerdip) ( SOT74)
HEF4543BT(D): 16-lead SO; plastic (SOT109-1)
( ): Package Designator North America
Fig.3 Segment designation.
FAMILY DATA, IDD LIMITS category MSI
See Family Specifications
January 1995
2

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