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參數資料
| 型號： | 74VHC139T |
| 廠商： | 意法半導體 |
| 英文描述： | DUAL 2 TO 4 DECODER/DEMULTIPLEXER |
| 中文描述： | 雙2至4譯碼器/解復用器 |
| 文件頁數： | 1/6頁 |
| 文件大小： | 73K |
| 代理商： | 74VHC139T |
November 1992
Revised April 1999
7
4
VH
C13
9
Dual
2-
to-
4
Decoder/
D
em
u
lt
ipl
exer
1999 Fairchild Semiconductor Corporation
DS011521.prf
www.fairchildsemi.com
74VHC139
Dual 2-to-4 Decoder/Demultiplexer
General Description
The VHC139 is an advanced high speed CMOS Dual 2-to-
4 Decoder/Demultiplexer fabricated with silicon gate
CMOS technology. It achieves the high speed operation
similar to equivalent Bipolar Schottky TTL while maintain-
ing the CMOS low power dissipation.
The active LOW enable input can be used for gating or it
can be used as a data input for demultiplexing applications.
When the enable input is held HIGH, all four outputs are
fixed at a HIGH logic level independent of the other inputs.
An input protection circuit ensures that 0V to 7V can be
applied to the input pins without regard to the supply volt-
age. This device can be used to interface 5V to 3V systems
and two supply systems such as battery back up. This cir-
cuit prevents device destruction due to mismatched supply
and input voltages.
Features
s High Speed: tPD = 5.0 ns (typ) at TA = 25°C
s Low power dissipation: ICC = 4 A (Max.) at TA = 25°C
s High noise immunity: VNIH = VNIL = 28% VCC (Min.)
s Power down protection is provided on all inputs
s Pin and function compatible with 74HC139
Ordering Code:
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Pin Description
Truth Table
H
= HIGH Voltage Level
L
= LOW Voltage Level
X
= Immaterial
Order Number
Package Number
Package Description
74VHC139M
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow
74VHC139SJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74VHC139MTC
MTC16
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74VHC139N
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Pin Names
Description
A0, A1
Address Inputs
E
Enable Inputs
O0–O3
Outputs
Inputs
Outputs
E
A0
A1
O0
O1
O2
O3
H
X
HHHH
L
LLL
H
L
H
LH
H
L
HHH
L
H
L
HHHHH
L
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 74VHC139TTR | 功能描述:編碼器、解碼器、復用器和解復用器 Dual 2-to-4 Decoder 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 |
| 74VHC14 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HEX SCHMITT inverter |
| 74VHC14_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HEX SCHMITT inverter |
| 74VHC14_10 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:74VHC14 Hex Schmitt Inverter |
| 74VHC14_99 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Hex Schmitt Inverter |
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