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參數(shù)資料
| 型號： | CD74HC138SM |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | LM5575 SIMPLE SWITCHER® 75V, 1.5A Step-Down Switching Regulator; Package: TSSOP EXP PAD; No of Pins: 16 |
| 中文描述： | 高速CMOS邏輯3至8線路解碼器/多路解復(fù)用器反相和非反相 |
| 文件頁數(shù)： | 2/7頁 |
| 文件大小： | 43K |
| 代理商： | CD74HC138SM |
2
Description
The Harris CD74HC138, CD74HC238 and CD74HCT138,
CD74HCT238 are high speed silicon gate CMOS decoders
well suited to memory address decoding or data routing
applications. Both circuits feature low power consumption
usually associated with CMOS circuitry, yet have speeds
comparable to low power Schottky TTL logic. Both circuits
have three binary select inputs (A0, A1 and A2). If the device
is enabled, these inputs determine which one of the eight
normally high outputs of the HC/HCT138 series will go low
or which of the normally low outputs of the HC/HCT238
series will go high.
Two active low and one active high enables (E1, E2, and E3)
are provided to ease the cascading of decoders. The
decoder’s 8 outputs can drive 10 low power Schottky TTL
equivalent loads.
Functional Diagram
Ordering Information
PART NUMBER
TEMP. RANGE (
o
C)
PACKAGE
PKG.
NO.
CD74HC138E
-55 to 125
16 Ld PDIP
E16.3
CD74HCT138E
-55 to 125
16 Ld PDIP
E16.3
CD74HC238E
-55 to 125
16 Ld PDIP
E16.3
CD74HCT238E
-55 to 125
16 Ld PDIP
E16.3
CD74HC138M
-55 to 125
16 Ld SOIC
M16.15
CD74HCT138M
-55 to 125
16 Ld SOIC
M16.15
CD74HC238M
-55 to 125
16 Ld SOIC
M16.15
CD74HCT238M
-55 to 125
16 Ld SOIC
M16.15
CD74HC138SM
-55 to 125
16 Ld SSOP
M16.209
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Wafer and die for this part number is available which meets all
electrical specifications. Please contact your local sales office or
Harris customer service for ordering information.
Ordering Information
PART NUMBER
TEMP. RANGE (
o
C)
PACKAGE
PKG.
NO.
TRUTH TABLE CD74HC138, CD74HCT138
INPUTS
OUTPUTS
ENABLE
ADDRESS
E3
E2
E1
A2
A1
A0
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
X
X
H
X
X
X
H
H
H
H
H
H
H
H
L
X
X
X
X
X
H
H
H
H
H
H
H
H
X
H
X
X
X
X
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
H
H
L
H
H
H
H
H
H
H
L
L
L
H
L
H
H
L
H
H
H
H
H
H
L
L
L
H
H
H
H
H
L
H
H
H
H
15
14
13
12
10
7
9
11
1
2
3
5
6
4
E3
E2
E1
A2
A1
A0
Y0
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
Y7
Y6
Y5
Y4
Y3
Y2
Y1
HC/HCT
238
HC/HCT
138
CD74HC138, CD74HCT138, CD74HC238, CD74HCT238
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CD74HC139E | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 High Speed CMOS Dual 2-to-4 Line RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| CD74HC139E | 制造商:Texas Instruments 功能描述:Decoder / Encoder / Multiplexer / Demult |
| CD74HC139EE4 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 High Speed CMOS Dual 2-to-4 Line RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| CD74HC139EG4 | 功能描述:IC 2-4LN DUAL DECOD/DEMUX 16 DIP 制造商:texas instruments 系列:74HC 包裝:管件 零件狀態(tài):在售 類型:解碼器/多路分解器 電路:1 x 2：4 獨立電路:2 電流 - 輸出高，低:5.2mA，5.2mA 電壓源:單電源 電壓 - 電源:2 V ~ 6 V 工作溫度:-55°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應(yīng)商器件封裝:16-PDIP 基本零件編號:74HC139 標(biāo)準(zhǔn)包裝:25 |
| CD74HC139EX | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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