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參數(shù)資料
| 型號： | CD74HC237PW |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | High-Speed CMOS Logic, 3- to 8-Line Decoder/Demultiplexer with Address Latches |
| 中文描述： | 高速CMOS邏輯，3 -至8線譯碼器/解復(fù)用器的地址鎖存器 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 381K |
| 代理商： | CD74HC237PW |
1
Data sheet acquired from Harris Semiconductor
SCHS146F
Features
Select One of Eight Data Outputs
- Active Low for CD74HC137 and CD74HCT137
- Active High for ’HC237 and CD74HCT237
l/O Port or Memory Selector
Two Enable Inputs to Simplify Cascading
Typical Propagation Delay of 13ns at V
CC
= 5V,
15pF, T
A
= 25
o
C (CD74HC237)
Fanout (Over Temperature Range)
- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
Wide Operating Temperature Range . . . -55
o
C to 125
o
C
Balanced Propagation Delay and Transition Times
Significant Power Reduction Compared to LSTTL
Logic ICs
HC Types
- 2V to 6V Operation
- High Noise Immunity: N
IL
= 30%, N
IH
= 30%, of V
CC
at V
CC
= 5V
HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
V
IL
= 0.8V (Max), V
IH
= 2V (Min)
- CMOS Input Compatibility, I
l
≤
1
μ
A at V
OL
, V
OH
Description
The
CD74HCT237 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.
CD74HC137,
CD74HCT137,
’HC237,
and
Both circuits have three binary select inputs (A0, A1 and A2)
that can be latched by an active High Latch Enable (LE)
signal to isolate the outputs from select-input changes. A
“Low” LE makes the output transparent to the input and the
circuit functions as a one-of-eight decoder. Two Output
Enable inputs (OE
1
and OE
0
) are provided to simplify
cascading
and
to
facilitate
demultiplexing function is accomplished by using the A
0
, A
1
,
A
2
inputs to select the desired output and using one of the
other Output Enable inputs as the data input while holding
the other Output Enable input in its active state. In the
CD74HC137 and CD74HCT137 the selected output is a
“Low”; in the ’HC237 and CD74HCT237 the selected output is
a “High”.
demultiplexing.
The
Ordering Information
PART NUMBER
TEMP. RANGE
(
o
C)
PACKAGE
CD54HC237F3A
-55 to 125
16 Ld CERDIP
CD74HC137E
-55 to 125
16 Ld PDIP
CD74HC137PW
-55 to 125
16 Ld TSSOP
CD74HC137PWR
-55 to 125
16 Ld TSSOP
CD74HC137PWT
-55 to 125
16 Ld TSSOP
CD74HC237E
-55 to 125
16 Ld PDIP
CD74HC237M
-55 to 125
16 Ld SOIC
CD74HC237MT
-55 to 125
16 Ld SOIC
CD74HC237M96
-55 to 125
16 Ld SOIC
CD74HC237NSR
-55 to 125
16 Ld SOP
CD74HC237PW
-55 to 125
16 Ld TSSOP
CD74HC237PWR
-55 to 125
16 Ld TSSOP
CD74HC237PWT
-55 to 125
16 Ld TSSOP
CD74HCT137E
-55 to 125
16 Ld PDIP
CD74HCT137MT
-55 to 125
16 Ld SOIC
CD74HCT137M96
-55 to 125
16 Ld SOIC
CD74HCT237E
-55 to 125
16 Ld PDIP
NOTE: When ordering, use the entire part number. The suffixes 96
and R denote tape and reel. The suffix T denotes a small-quantity
reel of 250.
March 1998 - Revised October 2003
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
2003, Texas Instruments Incorporated
CD74HC137, CD74HCT137,
CD54HC237, CD74HC237,
CD74HCT237
High-Speed CMOS Logic, 3- to 8-Line
Decoder/Demultiplexer with Address Latches
[ /Title
(CD74
HC137
,
CD74
HCT13
7,
CD74
HC237
,
CD74
HCT23
7)
/Sub-
ject
(High
Speed
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| CD74HC237PWE4 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Hi-Speed CMOS 3-to-8 Line Dcder/Dmtplxr 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 |
| CD74HC237PWG4 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Hi Sp CMOS Logic 3-8 Line Dec/Demult 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 |
| CD74HC237PWR | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3-to-8 Line Decoder 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 |
| CD74HC237PWRE4 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Hi-Speed CMOS 3-to-8 Line Dcder/Dmtplxr 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 |
| CD74HC237PWRG4 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Hi Sp CMOS Logic 3-8 Line Dec/Demult 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 |
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