Texas Instruments SN74HC138D Bedienungsanleitung
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SNx4HC138 3-Line To 8-Line Decoders/Demultiplexers
1 Features
•Targeted Specifically for High-Speed Memory
Decoders and Data-Transmission Systems
•Wide Operating Voltage Range (2 V to 6 V)
•Outputs Can Drive Up To 10 LSTTL Loads
•Low Power Consumption, 80-µA Maximum ICC
•Typical tpd = 15 ns
•±4-mA Output Drive at 5 V
•Low Input Current of 1-µA Maximum
•Active Low Outputs ( Selected Output is Low)
•Incorporate Three Enable Inputs to Simplify
Cascading or Data Reception
2 Applications
•LED Displays
• Servers
•White Goods
•Power Infrastructure
•Building Automation
•Factory Automation
3 Description
The SNx4HC138 devices are designed to be used
in high-performance memory-decoding or data-routing
applications requiring very short propagation delay
times. In high-performance memory systems, these
decoders can be used to minimize the effects of
system decoding. When employed with high-speed
memories using a fast enable circuit, the delay times
of these decoders and the enable time of the memory
are usually less than the typical access time of the
memory. This means that the effective system delay
introduced by the decoders is negligible.
Device Information
PART NUMBERPACKAGE(1) BODY SIZE (NOM)
SN74HC138DSOIC (16)9.90 mm x 3.90 mm
SN74HC138DBSSOP (16)6.20 mm x 5.30 mm
SN74HC138NPDIP (16)19.32 mm x 6.35 mm
SN74HC138NSSO (16)10.20 mm x 5.30 mm
SN74HC138PWTSSOP (16)5.00 mm x 4.40 mm
SN54HC138JCDIP (16)21.34 mm x 6.92 mm
SN54HC138WCFP (16)10.16 mm x 6.73 mm
SN54HC138FKLCCC (20)8.89 mm x 8.89 mm
(1)For all available packages, see the orderable addendum at
the end of the data sheet.
Pin numbers shown are for the D, DB, J, N, NS, PW, and W packages.
Functional Block DIagram
SN54HC138, SN74HC138
SCLS107G – DECEMBER 1982 – REVISED OCTOBER 2021
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
Produktspezifikationen
| Marke: | Texas Instruments |
| Kategorie: | Nicht kategorisiert |
| Modell: | SN74HC138D |
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