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CD74HCT139 Datasheet(PDF) 1 Page - Harris Corporation

Part No. CD74HCT139
Description  High Speed CMOS Logic Dual 2-to-4 Line Decoder/Demultiplexer
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Maker  HARRIS [Harris Corporation]
Homepage  http://www.harris.com
Logo HARRIS - Harris Corporation

CD74HCT139 Datasheet(HTML) 1 Page - Harris Corporation

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SEMICONDUCT OR
1
Features
• Multifunction Capability
- Binary to 1 of 4 Decoders or 1 to 4 Line
Demultiplexer
• Active Low Mutually Exclusive Outputs
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55oC to 125oC
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30%of VCC at
VCC = 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
VIL= 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH
• Memory Decoding, Data Routing, Code Conversion
Description
The
Harris
CD74HC139,
CD74HCT139
contain
two
independent binary to one of four decoders each with a
single active low enable input (1E or 2E). Data on the select
inputs (1A0 and 1A1 or 2A0 and 2A1) cause one of the four
normally high outputs to go low.
If the enable input is high all four outputs remain high. For
demultiplexer operation the enable input is the data input.
The enable input also functions as a chip select when these
devices are cascaded. This device is functionally the same
as the CD4556B and is pin compatible with it.
The outputs of these devices can drive 10 low power
Schottky TTL equivalent loads. The 74HCT logic family is
functionally as well as pin equivalent to the 74LS logic family.
Pinout
CD74HC139, CD74HCT139
(PDIP, SOIC)
TOP VIEW
Ordering Information
PART NUMBER
TEMP. RANGE (oC)
PACKAGE
PKG.
NO.
CD74HC139E
-55 to 125
16 Ld PDIP
E16.3
CD74HCT139E
-55 to 125
16 Ld PDIP
E16.3
CD74HC139M
-55 to 125
16 Ld SOIC
M16.15
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Die is available which meets all electrical specifications. Please
contact your local sales office or Harris customer service for
ordering information.
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
1E
1A0
1A1
1Y0
1Y1
1Y2
GND
1Y3
VCC
2A0
2A1
2Y0
2Y1
2Y2
2Y3
2E
September 1997
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© Harris Corporation 1997
CD74HC139,
CD74HCT139
High Speed CMOS Logic
Dual 2-to-4 Line Decoder/Demultiplexer
File Number
1545.1


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