MAS9138 Datasheet | MAS

DESCRIPTION MAS9138 is a single chip duplex asynchronous to synchronous converter. It converts asynchronous start stop characters to synchronous format, with stop bit deletion when required as defined in the CCITT remendation V.14. On the receiver channel MAS9138 converts the ining synchronous data to asynchronous start stop character format with stop bit insertion when required as defined in the CCITT remendation V.14. MAS9138 implements the data modes for the synchronous interface as specified in the V.14. MAS9138 can be configured to operate at any frequency up to 38.4 kbits/s within these modes. The device contains a bit generator and frequency selection logic to allow easy operation at other data rates. With just one crystal the device can adapt to ten (10) different bit rates so it is ideally suited to be used with the most mon modem systems ranging from V.22 to V.34. FEATURES - - - - - - - - - Implements CCITT remendation V.14 Bypass operation Character length from 8 to 11 bits including start stop and parity bits CMOS and LS-TTL patible interface Low power consumption (typically 10 m W) No additional circuitry needed to perform conversion Single +3 +5V supply Operating temperature -40o C to 85o C 16-pin PDIP and SO package APPLICATION - - - - Data munication systems Adapts asynchronous terminals to synchronous modems Full or half card PC modems using UART as a data source Simplifying data multiplexing systems BLOCK DIAGRAM CL1 CL2 XESR TMG OSC TSL TXC TDO RXC RDI XASY XHST VSS > _1 ASYNC TO SYNC SYNC TO ASYNC O S C CONTROL 1 (10) DA9138.005 12 April, 2006 PIN CONFIGURATION PDIP 16 SO16 16 VDD 15 RXC 14 RDI 13 RDO 12 XHST 11 XASY 10 TDO 9 TDI TSL 1 TMG 2 OSC 3 TXC- 4 CL1 5 CL2 6 XESR 7 VSS 8 MAS9138N TSL 1 TMG 2 OSC 3 TXC- 4 CL1 5 CL2 6 XESR 7 VSS 8 MAS9138SB/SD 16 15 14 13 12 11 10 9 VDD RXC RDI RDO XHST XASY TDO TDI Top marking: YYWW = Year Week, XXXXX.X = Lot Number, PIN DESCRIPTION Pin name TSL TMG Pin no. PDIP 1 2 SO 1...