SN74LS247
BCD−to−Seven−Segment Decoders/Drivers
The SN74LS247 is a BCD-to-Seven-Segment Decoder/Drivers.
The LS247 comp...
SN74LS247
BCD−to−Seven−Segment Decoders/Drivers
The SN74LS247 is a BCD-to-Seven-Segment Decoder/Drivers.
The LS247 composes the and with the tails. The LS247 has active-low outputs for direct drive of indicators.
The LS247 features a lamp test input and have full ripple-blanking input/output controls. An automatic leading and/or trailing-edge zero-blanking control (RBI and RBO) is incorporated and an overriding blanking input (BI) is contained which may be used to control the lamp intensity by pulsing or to inhibit the output’s lamp test may be performed at any time when the BI/RBO node is at high level. Segment identification and resultant displays are shown below. Display pattern for BCD input counts above 9 are unique symbols to authenticate input conditions.
Open-Collector Outputs Drive Indicators Directly Lamp-Test Provision Leading/ Trailing Zero Suppression
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min Typ Max Unit
VCC
Supply
Voltage
TA
Operating Ambient
Temperature Range
4.75 5.0 5.25
V
0
25
70
°C
IOH
Output Current − High
BI/RBO
−50 mA
IOL
Output Current − Low
BI/RBO
3.2
mA
VO(off)
Off−State Output
Voltage a−g
15
V
IO(on)
On−State Output Current a−g
24
mA
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LOW POWER SCHOTTKY
16 1 PLASTIC N SUFFIX CASE 648
16 1
SOIC D SUFFIX CASE 751B
ORDERING INFORMATION
Device
Package
Shipping
SN74LS247N
16 Pin DIP 2000 Units/Box
SN74LS247D
SOIC−16 38 Units/Rail
SN74LS247DR2 SOIC−16 2500/Tape & Reel
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