CH17307C, CH1776, CH1786 Selling Leads, Datasheet
MFG:CERMEFEK Package Cooled:CERMETEK D/C:0417+
CH17307C, CH1776, CH1786 Datasheet download
Part Number: CH17307C
MFG: CERMEFEK
Package Cooled: CERMETEK
D/C: 0417+
CH17307C, CH1776, CH1786
- Table of contents:
Info of CH17307C
Info of CH1776
Info of CH1786
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About CH1005C
PDF/DataSheet Download
Datasheet: CH1005C
File Size: 346974 KB
Manufacturer: ETC [ETC]
Download : Click here to Download
About CH1005C
PDF/DataSheet Download
Datasheet: CH1005C
File Size: 346974 KB
Manufacturer: ETC [ETC]
Download : Click here to Download
About CH1786
PDF/DataSheet Download
Datasheet: CH1786
File Size: 556975 KB
Manufacturer: ETC [ETC]
Download : Click here to Download
CH1786 General Description
The CH1786 family of modems are a full function, FCC Part 68 approved 2400bps modem. These modems provide a fast, easy and flexible way to integrate a modem into any OEM product while utilizing the minimum amount of PCB space (1.01 "x 1.27 "x 0.52 "). The CH1786 family only requires two external interfaces: a CCITT V.24 serial interface that can be routed directly to a UART, and a Tip and Ring interface which goes directly to an RJ-11 jack for the PSTN line connection. The CH1786 can be controlled with industry standard AT commands and, hence, is compatible with available industry communication software.
All CH1786 modems support asynchronous operation at 2400bps, 1200bps, and 300bps to both Bell and CCITT standards. The resident PSTN line interface, or Data Access Arrangement (DAA), while being FCC approved, is also Canadian DOT approvable and can be approved in other countries that require 1500VAC RMS isolation requirements per UL 1950 Edition 3. The CH1786 family of modems operate off a single 5- volt supply. The low power operation and automatic standby mode make these modems ideally suited for portable equipment. In addition, their small physical size affords maximum flexibility in equipment design.
The CH1786 comes with FCC Part 68 approval and is shipped from the factory with an FCC Part 68 label indicating the registration number and ringer equivalent. This label should be prominently displayed on the end product.
CH1786 Maximum Ratings
| Parameter | Description | Min. | Typ. | Ma x. |
Units |
| VCC | Positive Supply Voltage- Noise less than 50mV | 4.75 | 5.0 | 5.2 5 |
V |
| ICC Off Hook | Nominal Operating Current when modem is OFF Hook | 50 | 75 | mA | |
| ICC On Hook | Nominal Operating Current when modem is ON Hook | 25 | 50 | mA | |
| ICCPD | Power Down Current | 10 | mA | ||
| VIH | High Level Input Voltage* | 2 | V | ||
| VIL | Low Level Input Voltage* | -0.3 | 0.8 | V | |
| IIN | Input Leakage Current (TXD, DTR, RTS) | 15 | 10 0 |
uA | |
| ILO | Leakage Current DCD , HS , RXD , SLEEP , DSR | 10 | uA | ||
| CP | Capacitive Lead (TXT, DTR, RST) | 10 | pF | ||
| VT+ | Positive Hysteresis Threshold for RESET pin | 2.5 | V | ||
| VT- | Negative Hysteresis Threshold for RESET pin | 1.8 | V | ||
| VOH | High Level (IOH = 0.5mA)* | 2.4 | V | ||
| VOL | Low Level (IOL = 1.6mA)* | 0.6 | V |
CH1786 Features
`Supports Standards CCITT V.22bis,V.22,Bell 212,and Bell 103
`FCC Part 68 approved and DOT CSA CS-03 Part I approvable
`UL 1950 and CSA C22.2 950 Listed
`UL File Number: E104957
`AT Command structure with extensions
`1500 VAC RMS isolation barrier minimum, 2122V peak surge protection minimum
`Single 5 volt operation
`Low power operation with automatic reduced power standby mode
`Automatic adaptive and fixed compromise equalization
`Size: 1.01 "x 1.27 "x 0.52 "(nominal)
`NVRAM allows storage of custom configurations and telephone numbers
`FCC Part 68 approved and DOT CSA CS-03 Part I approvable
`UL 1950 and CSA C22.2 950 Listed
`UL File Number: E104957
`AT Command structure with extensions
`1500 VAC RMS isolation barrier minimum, 2122V peak surge protection minimum
`Single 5 volt operation
`Low power operation with automatic reduced power standby mode
`Automatic adaptive and fixed compromise equalization
`Size: 1.01 "x 1.27 "x 0.52 "(nominal)
`NVRAM allows storage of custom configurations and telephone numbers
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