MAS7838 ETC, MAS7838 Datasheet
MAS7838
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MAS7838 Summary of contents
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... The MAS7838 is a single chip duplex synchronous to asynchronous converter. It converts asynchronous start stop characters to synchronous character format, with stop bit deletion when required as defined in the CCITT recommendation V.14 (V.22). On the receiver channel the MAS7838 converts the incoming synchronous data to asynchronous start stop character format with stop bit Implements CCITT recommendations V ...
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... Receiver data input mark space. The received data must be synchronized to the receiver timing RXC from the synchronous channel (pin 15). Receiver timing. Receiver square wave timing from the synchronous channel. The received data RDI must be synchronized to the rising edge of RXC. Power supply SO16 MAS7838S TSL 1 16 VDD TMG 2 ...
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Supply Voltage Storage Temperature Supply Voltage Supply Current Operating Temperature u Input high voltage Input low voltage Input leakage current Input capacitance load Internal pull-up resistor for digital inputs u Output low voltage Output high voltage u Low to high ...
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Timings between synchronous clocks and data are shown below. Note that absolute delays depend on the speed of the data transmission. TXC TDO RXC RDI u The synchronous start-stop character, TDI (transmitter data input), is read into the Tx buffer. ...
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... The MAS7838 requires clock signals in order to function properly. The synchronous data transfer always requires the TXC clock. The clock is used internally for: -shifting data out from the TX buffer (to pin TDO) -shifting data into the RX buffer (via pin RDI) -detection of the bit rate in order to adjust the internal ...
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... TDI RDI RDO M AS7838 MAS7838 TDO TDI TXC RDI RDO RXC this, either a very high sample rate is needed or first convert the data to synchronous mode, where synchronous multiplexing can be used and only one sample per data bit is needed. ...
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... Ext. Signal Rate 7 Char. Length 5 Char. Length 3 6 ASY/SYN Select Optional timing from the synchronous modem. In this case CR 1 can be eliminated. +5v MAS7838 simplified application: V.28 interface for synchronous modem 20 September, 2000 Synchronous Modem TDO TTL-Level TXC TTL-Level RDI TTL-Level RXC TTL-Level *) 16 x TXC ...
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LEAD PDIP OUTLINE (300 MIL BODY) 6.10 7.11 5-7° 7.62 BSC All dimensions are in accordance with JEDEC standard MS-001. 16 LEAD SO OUTLINE (300 MIL BODY) 0.33 x 45° 5° TYP. 5° TYP. 5° TYP. All dimensions are ...
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... MAS7838N MAS7838S-T MAS7838S Micro Analog Systems Oy Kamreerintie 2, P.O.Box 51 FIN-02771 Espoo, FINLAND http:\\www.mas-oy.com NOTICE Micro Analog Systems Oy reserves the right to make changes to the products contained in this data sheet in order to improve the design or performance and to supply the best possible products. Micro Analog Systems Oy assumes no responsibility for the use of any circuits shown in this data sheet, conveys no license under any patent or other rights unless otherwise specified in this data sheet, and makes no claim that circuits are free from patent infringement ...