MC145442B中文资料摩托罗拉数据手册PDF规格书
MC145442B规格书详情
Single–Chip 300–Baud Modem
The MC145442B and MC145443B silicon–gate CMOS single–chip low–speed modems contain a complete frequency shift keying (FSK) modulator, demodulator, and filter. These devices are compatible with CCITT V.21 (MC145442B) and Bell 103 (MC145443B) specifications. Both devices provide full–duplex or half–duplex 300–baud data communication over a pair of telephone lines. They also include a carrier detect circuit for the demodulator section and a duplexer circuit for direct operation on a telephone line through a simple transformer.
• MC145442B Compatible with CCITT V.21
• MC145443B Compatible with Bell 103
• Low–Band and High–Band Band–Pass Filters On–Chip
• Simplex, Half–Duplex, and Full–Duplex Operation
• Originate and Answer Mode
• Analog Loopback Configuration for Self Test
• Hybrid Network Function On–Chip
• Carrier Detect Circuit On–Chip
• Adjustable Transmit Level and CD Delay Timing
• On–Chip Crystal Oscillator (3.579 MHz)
• Single +5 V Power Supply Operation
• Internal Mid–Supply Generator
• Power–Down Mode
• Pin Compatible with MM74HC943
• Capable of Driving –9 dBm into a 600 Ω Load
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
MICROCHIP/微芯 |
25+ |
NA |
996880 |
只做原装,欢迎来电资询 |
询价 | ||
MOT |
SOP20 |
01+ |
9 |
全新原装进口自己库存优势 |
询价 | ||
ON |
24+ |
DIP20 |
20000 |
全新原厂原装,进口正品现货,正规渠道可含税!! |
询价 | ||
ON |
2016+ |
DIP20 |
4656 |
只做原装,假一罚十,公司可开17%增值税发票! |
询价 | ||
MOTOROLA/摩托罗拉 |
23+ |
SOP20 |
15000 |
全新原装现货,价格优势 |
询价 | ||
MOTOROLA |
22+ |
SOP |
3000 |
原装正品,支持实单 |
询价 | ||
MOT |
25+ |
SOP20 |
3000 |
全新原装、诚信经营、公司现货销售! |
询价 | ||
ON |
DIP20 |
4656 |
一级代理 原装正品假一罚十价格优势长期供货 |
询价 | |||
MOT |
23+ |
SOP20 |
2500 |
绝对全新原装!现货!特价!请放心订购! |
询价 | ||
MOTO |
23+ |
SOP-16 |
9526 |
询价 |