參數(shù)資料
型號(hào): SN74LS138D
廠商: MOTOROLA INC
元件分類: 通用總線功能
英文描述: 1-OF-8 DECODER/ DEMULTIPLEXER
中文描述: LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16
封裝: SOIC-16
文件頁(yè)數(shù): 1/5頁(yè)
文件大小: 185K
代理商: SN74LS138D
5-230
FAST AND LS TTL DATA
1-OF-8 DECODER/
DEMULTIPLEXER
The LSTTL/MSI SN54/74LS138 is a high speed 1-of-8 Decoder/
Demultiplexer. This device is ideally suited for high speed bipolar memory
chip select address decoding. The multiple input enables allow parallel ex-
pansion to a 1-of-24 decoder using just three LS138 devices or to a 1-of-32
decoder using four LS138s and one inverter. The LS138 is fabricated with the
Schottky barrier diode process for high speed and is completely compatible
with all Motorola TTL families.
Demultiplexing Capability
Multiple Input Enable for Easy Expansion
Typical Power Dissipation of 32 mW
Active Low Mutually Exclusive Outputs
Input Clamp Diodes Limit High Speed Termination Effects
CONNECTION DIAGRAM DIP
(TOP VIEW)
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
PIN NAMES
LOADING
(Note a)
HIGH
LOW
A0–A2
E1, E2
E3
O0–O7
Address Inputs
Enable (Active LOW) Inputs
Enable (Active HIGH) Input
Active LOW Outputs (Note b)
0.5 U.L.
0.5 U.L.
0.5 U.L.
10 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
5 (2.5) U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40
μ
A HIGH/1.6 mA LOW.
b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)
Temperature Ranges.
SN54/74LS138
1-OF-8 DECODER/
DEMULTIPLEXER
LOW POWER SCHOTTKY
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
16
1
16
1
ORDERING INFORMATION
SN54LSXXXJ
SN74LSXXXN
SN74LSXXXD
Ceramic
Plastic
SOIC
16
1
D SUFFIX
SOIC
CASE 751B-03
LOGIC SYMBOL
LOGIC DIAGRAM
相關(guān)PDF資料
PDF描述
SN74LS138N 1-OF-8 DECODER/ DEMULTIPLEXER
SN74LS138 LOW POWER SCHOTTKY
SN74LS138D LOW POWER SCHOTTKY
SN74LS138N LOW POWER SCHOTTKY
SN74LS139 LOW POWER SCHOTTKY
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SN74LS138DR2 制造商:Motorola Inc 功能描述:
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