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CD74HC237DYYR.A中文资料德州仪器数据手册PDF规格书
CD74HC237DYYR.A规格书详情
特性 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 VCC = 5V,
15pF, TA = 25oC (CD74HC237)
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55oC to 125oC
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30%, of VCC
at VCC = 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
VIL= 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il ≤ 1μA at VOL, VOH
描述 Description
The CD74HC137, CD74HCT137, ’HC237, and
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.
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 (OE1 and OE0) are provided to simplify
cascading and to facilitate demultiplexing. The
demultiplexing function is accomplished by using the A0, A1,
A2 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”.
| 供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
|---|---|---|---|---|---|---|---|
24+ |
DIP |
382 |
询价 | ||||
HARRIS |
18+ |
DIP16 |
12500 |
全新原装正品,本司专业配单,大单小单都配 |
询价 | ||
TI |
22+ |
16PDIP |
9000 |
原厂渠道,现货配单 |
询价 | ||
TI |
23+ |
16-PDIP |
3115 |
正品原装货价格低 |
询价 | ||
TI(德州仪器) |
24+ |
PDIP16 |
1493 |
原装现货,免费供样,技术支持,原厂对接 |
询价 | ||
TI/德州仪器 |
24+ |
DIP16 |
54000 |
郑重承诺只做原装进口现货 |
询价 | ||
24+ |
N/A |
75000 |
一级代理-主营优势-实惠价格-不悔选择 |
询价 | |||
TI |
16+ |
原厂封装 |
10000 |
全新原装正品,代理优势渠道供应,欢迎来电咨询 |
询价 | ||
TI? |
24+ |
DIP? |
5000 |
只做原装正品现货 欢迎来电查询15919825718 |
询价 | ||
TI/德州仪器 |
23+ |
PDIP16 |
10000 |
正规渠道,只有原装! |
询价 |


