CH1786 Datasheet - ETC

CH1786 CH1786 Family of Ultra Small 2400bps Modems

OF FUNCTIONAL BLOCKS AND DISCUSSION OF BASIC OPERATIONS Figure 1 contains a functional block drawing of the CH1786. The CH1786 is a highly integrated, fullfunction modem, comprised of a modulator/ demodulator, controller, NVRAM and an FCC Part 68 approved and UL 1950/CSA C22.2 950 listed PSTN line i.

CH1786 Family of Ultra Small 2400bps Modems INTRODUCTION 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.

CH1786 Features

* Supports Standards 212,and Bell 103 CCITT V.22bis,V.22,Bell

* 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 ba

CH1786_ETC.pdf