MC74HC164中文资料PDF规格书
厂商型号 |
MC74HC164 |
参数属性 | MC74HC164 封装/外壳为14-SOIC(0.154",3.90mm 宽);包装为卷带(TR)剪切带(CT)Digi-Reel® 得捷定制卷带;类别为集成电路(IC) > 移位寄存器;产品描述:IC SHIFT REGISTER 8BIT 14SOIC |
功能描述 | Universal Digital Loop Transceiver (UDLT-3) Evaluation Module |
文件大小 |
759.29 Kbytes |
页面数量 |
40 页 |
生产厂商 | NXP Semiconductors |
企业简称 |
nxp【恩智浦】 |
中文名称 | 恩智浦半导体公司官网 |
原厂标识 | |
数据手册 | |
更新时间 | 2024-5-31 23:00:00 |
MC74HC164规格书详情
Application Circuit
At the frequencies of interest (128 kHz and 256 kHz), ordinary telephone wire has a characteristic
impedance of about 110 W. In the schematic above, loading resistors R19–22 between LO1 and LO2 and
the Tx windings of the transformer are set to 110 W. The series combination of these resistors is significantly
higher than the 20-W output impedance of the LO1 and LO2 drivers, causing the resistance presented to the
transformer to be set primarily by the resistors alone.
Clamp diodes D1–4 protect the LO1 and LO2 outputs from transient signals on the twisted pair. Line settling
between data bursts is improved by selecting a bandwidth of 20 to 512 kHz for the transformer interface.
The lower corner frequency is set by adjusting the inductance of the transformer's Tx winding to 1.75 mH.
The upper corner frequency is determined by the design of the transformer winding technique.
The impedance matching network on the transmit side of the transformer attenuates the transmitted signal
by 12 dB. This loss is recovered in the receive side of the transformer. A step-up of 4:1 directly compensates
for the 12 dB loss. As with the transmit side, a protection network is required. D5 and D6 clamp the received
signal to a safe level but are sufficiently isolated by R23 so that they do not load the transformer when they
are conducting.
At 192 kHz (the spectral peak of MDPSK), 26 AWG wire attenuates signals about 17 dB/km. The receiver
in the UDLT-3 has sufficient input dynamic range to operate on loops as long as 2 km.
产品属性
- 产品编号:
MC74HC164ADR2G
- 制造商:
onsemi
- 类别:
集成电路(IC) > 移位寄存器
- 系列:
74HC
- 包装:
卷带(TR)剪切带(CT)Digi-Reel® 得捷定制卷带
- 逻辑类型:
移位寄存器
- 输出类型:
推挽式
- 功能:
串行至并行
- 电压 - 供电:
2V ~ 6V
- 工作温度:
-55°C ~ 125°C
- 安装类型:
表面贴装型
- 封装/外壳:
14-SOIC(0.154",3.90mm 宽)
- 供应商器件封装:
14-SOIC
- 描述:
IC SHIFT REGISTER 8BIT 14SOIC
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ON(安森美) |
23+ |
NA/ |
7350 |
现货供应,当天可交货!免费送样,原厂技术支持!!! |
询价 | ||
ON |
2016+ |
SOP |
2600 |
只做原装,假一罚十,公司可开17%增值税发票! |
询价 | ||
MOT |
2020+ |
DIP14 |
80000 |
只做自己库存,全新原装进口正品假一赔百,可开13%增 |
询价 | ||
ON |
21+ |
SOP14 |
8800 |
公司只做原装正品 |
询价 | ||
三年内 |
1983 |
纳立只做原装正品13590203865 |
询价 | ||||
ON |
20+ |
SMD |
11520 |
特价全新原装公司现货 |
询价 | ||
MOT |
22+23+ |
SOIC-143.9mm |
7995 |
绝对原装正品全新进口深圳现货 |
询价 | ||
MOTOROLA/摩托罗拉 |
24+ |
DIP |
58000 |
全新原厂原装正品现货,可提供技术支持、样品免费! |
询价 | ||
MOT |
98+ |
DIP14 |
3560 |
全新原装进口自己库存优势 |
询价 | ||
MOT |
23+ |
SOP14 |
20000 |
原厂原装正品现货 |
询价 |
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