(China (Mainland))
Product Summary
The CD40147B CMOS encoder features priorityencoding of the inputs to ensure that only thehighest-order data line is encoded. Ten datainput lines (0-9) are encoded to four-line(8, 4, 2, 1) BCD. The highest priority line is line 9.All four output lines are logic 1 (VSS) when allinput lines are logic 0. All inputs and outputs arebuffered, and each output can drive one TTLlow-power Schottky load. The CD40147B isfunctionally similar to the TTL54/74147 if pin 15is tied low.
Parametrics
Absolute Maximum Ratings:
(1)DC Supply-Voltage range:-0.5V to +20V; (2)Input voltage range,all inputs:-0.5V to CDD+0.5V; (3)DC input current,any one input:±10mA; (4)Power dissipation per package:For TA=-55℃ to+100℃:500nW;For TA=+100℃ to +125℃:Derate Linearity at 12mW/℃ to 200mW; (5)Device dissipation per output transistor,for TA=Full package-temperature range(All package Types):100mW; (6)Operating-temperature range:-55℃ to +125℃; (7)Storage temperature range:-65℃ to +150℃; (8)Lead temperature (During soldering)at distance 1/16±1/32inch(1.59±0.79mm)from case for 10s max:+265℃
Features
(1)Encode 10-line to 4-line BCD; (2)Active low inputs and outputs; (3)Standardized,symmeterial output characteristics; (4)100% tested for quiescent current at 20V; (5)5-V.10-V and 15-V parametric ratings; (6)Meets all requirements of JEDEC Tentative Standard No.13A,"Standard Specifications for Description of‘B’Series CMOS Devices; (7)Maximum input current of 1μA at 18V over full packag-trmperature range;100nA at 18V and 25℃ ; (8)Noise margin(full package-temperature range):1V at VDD=5V;2V at VDD=10V;2.5V at VDD=15V
Diagrams
<IMG border=0 src="http://www.seekic.com/uploadfile/ic-mfg/201271951033771.jpg">
| Image | Part No | Mfg | Description |  |
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 CD40147BE |
Texas Instruments |
Encoders, Decoders, Multiplexers & Demultiplexers BCD Priority Encodr |
Data Sheet |
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CD40147BEE4 |
Texas Instruments |
Encoders, Decoders, Multiplexers & Demultiplexers 10 to 4-Line BCD Priority Encoder |
Data Sheet |
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