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參數資料
| 型號： | SN74LS138N |
| 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, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數： | 1/5頁 |
| 文件大小： | 185K |
| 代理商： | SN74LS138N |
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PDF資料 |
PDF描述 |
|---|---|
| SN74LS138 | LOW POWER SCHOTTKY |
| SN74LS138D | LOW POWER SCHOTTKY |
| SN74LS138N | LOW POWER SCHOTTKY |
| SN74LS139 | LOW POWER SCHOTTKY |
| SN74LS139D | LOW POWER SCHOTTKY |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SN74LS138N | 制造商:Texas Instruments 功能描述:IC 74LS 74LS138 DIP16 5.25V |
| SN74LS138N | 制造商:Texas Instruments 功能描述:IC 74LS 74LS138 DIP16 5.25V |
| SN74LS138N3 | 制造商:Texas Instruments 功能描述: |
| SN74LS138NE4 | 功能描述:編碼器、解碼器、復用器和解復用器 3-line to 8-line Decoder/Demltplxr RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數: 線路數量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| SN74LS138NMOT88 | 制造商:Motorola 功能描述:74LS138N |
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