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HC138のメーカーはSystem Logic Semiconductorです、この部品の機能は「1-of-8 Decoder/Demultiplexer」です。 |
部品番号 | HC138 |
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部品説明 | 1-of-8 Decoder/Demultiplexer | ||
メーカ | System Logic Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとHC138ダウンロード(pdfファイル)リンクがあります。 Total 5 pages
SL74HC138
1-of-8 Decoder/Demultiplexer
High-Performance Silicon-Gate CMOS
The SL74HC138 is identical in pinout to the LS/ALS138. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
The SL74HC138 decodes a three-bit Address to one-of-eight active-
low outputs. This device features three Chip Select inputs, two active-
low and one active-high to facilitate the demultiplexing, cascading, and
chip-selecting functions. The demultiplexing function is accomplished
by using the Address inputs to select the desired device output; one
of the Chip Selects is used as a data input while the other Chip Selects
are held in their active states.
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
SL74HC138N Plastic
SL74HC138D SOIC
TA = -55° to 125° C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
PIN 16 =VCC
PIN 8 = GND
SLS
System Logic
Semiconductor
FUNCTION TABLE
Inputs
Outputs
CS1CS2CS3 A2 A1A0
Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
XXH
XHX
LXX
XXX
XXX
XXX
H H H HHHHH
H H H HHHHH
H H H HHHHH
HLL
HLL
HLL
HLL
LLL
LLH
LHL
LHH
L H H HHHHH
H L H HHHHH
H H L HHHHH
H H H LHHHH
HLL
HLL
HLL
HLL
HLL
HLH
HHL
HHH
H H H HLHHH
H H H HHLHH
H H H HHHLH
H H H HHHHL
H = high level (steady state)
L = low level (steady state)
X = don’t care
1 Page SL74HC138
DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND)
Symbol
Parameter
Test Conditions
VIH Minimum High-Level VOUT=0.1 V or VCC-0.1 V
Input Voltage
IOUT≤ 20 µA
VIL Maximum Low -Level VOUT=0.1 V or VCC-0.1 V
Input Voltage
IOUT ≤ 20 µA
VOH Minimum High-Level VIN=VIH or VIL
Output Voltage
IOUT ≤ 20 µA
VIN=VIH or VIL
IOUT ≤ 4.0 mA
IOUT ≤ 5.2 mA
VOL Maximum Low-Level VIN=VIH or VIL
Output Voltage
IOUT ≤ 20 µA
VIN=VIH or VIL
IOUT ≤ 4.0 mA
IOUT ≤ 5.2 mA
IIN Maximum Input
Leakage Current
VIN=VCC or GND
ICC Maximum Quiescent VIN=VCC or GND
Supply Current
IOUT=0µA
(per Package)
VCC Guaranteed Limit
V 25 °C ≤85 ≤125 Unit
to °C °C
-55°C
2.0 1.5 1.5 1.5
4.5 3.15 3.15 3.15
6.0 4.2 4.2 4.2
V
2.0 0.5 0.5 0.5
4.5 1.35 1.35 1.35
6.0 1.8 1.8 1.8
V
2.0 1.9
4.5 4.4
6.0 5.9
1.9 1.9
4.4 4.4
5.9 5.9
V
4.5 3.98 3.84 3.7
6.0 5.48 5.34 5.2
2.0 0.1
4.5 0.1
6.0 0.1
0.1 0.1
0.1 0.1
0.1 0.1
V
4.5 0.26 0.33 0.4
6.0 0.26 0.33 0.4
6.0 ±0.1 ±1.0 ±1.0 µA
6.0 4.0
40 160 µA
SLS
System Logic
Semiconductor
3Pages | |||
ページ | 合計 : 5 ページ | ||
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PDF ダウンロード | [ HC138 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
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HC138 | 1-of-8 Decoder/Demultiplexer | System Logic Semiconductor |
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