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CD74HC137 Datasheet(PDF) 2 Page - Texas Instruments

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Part No. CD74HC137
Description  High Speed CMOS Logic, 3-to-8 Line Decoder Demultiplexer with Address Latches
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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CD74HC137 Datasheet(HTML) 2 Page - Texas Instruments

 
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Description
The Harris CD74HC137, CD74HC237 and CD74HCT137,
CD74HCT237 are high speed silicon gate CMOS decoders
well suited to memory address decoding or data routing
applications. Both circuits feature low power consumption
usually associated with CMOS circuitry, yet have speeds
comparable to low power Schottky TTL logic.
Both circuits have three binary select inputs (A0, A1 and A2)
that can be latched by an active High Latch Enable (LE) sig-
nal to isolate the outputs from select-input changes. A “Low”
LE makes the output transparent to the input and the circuit
functions as a one-of-eight decoder. Two Output Enable
inputs (OE1 and OE0) are provided to simplify cascading
and to facilitate demultiplexing. The demultiplexing function
is accomplished by using the A0,A1,A2 inputs to select the
desired output and using one of the other Output Enable
inputs as the data input while holding the other Output
Enable input in its active state. In the CD74HC137 and
CD74HCT137 the selected output is a “Low”; in the
CD74HC237 and CD74HCT237 the selected output is a
“High”.
Ordering Information
PART NUMBER
TEMP. RANGE (oC)
PACKAGE
PKG.
NO.
CD74HC137E
-55 to 125
16 Ld PDIP
E16.3
CD74HCT137E
-55 to 125
16 Ld PDIP
E16.3
CD74HC237E
-55 to 125
16 Ld PDIP
E16.3
CD74HC237M
-55 to 125
16 Ld SOIC
M16.15
CD74HCT237E
-55 to 125
16 Ld PDIP
E16.3
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Wafer and die for this part number is available which meets all
electrical specifications. Please contact your local sales office or
Harris customer service for ordering information.
CD74HC137, CD74HCT137, CD74HC237, CD74HCT237


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