MAS9138A1SD06 MAS [Micro Analog systems], MAS9138A1SD06 Datasheet

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MAS9138A1SD06

Manufacturer Part Number
MAS9138A1SD06
Description
ASYNCHRONOUS TO SYNCHRONOUS CONVERTER
Manufacturer
MAS [Micro Analog systems]
Datasheet
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
recommendation V.14. On the receiver channel
MAS9138 converts the incoming synchronous data to
asynchronous start stop character format with stop bit
insertion when required as defined in the CCITT
recommendation V.14. MAS9138 implements the data
FEATURES
BLOCK DIAGRAM
Implements CCITT recommendation V.14
Bypass operation
Character length from 8 to 11 bits including start
stop and parity bits
CMOS and LS-TTL compatible interface
Low power consumption (typically 10 mW)
No additional circuitry needed to perform conversion
Single +3.3...+5V supply
Operating temperature -40
16-pin PDIP and SO package
ASYNCHRONOUS TO SYNCHRONOUS CONVERTER
• Pin compatible with MAS7838
• Interfaces a duplex asynchronous to synchronous channel
• Modem speeds of 600, 1.2k, 2.4k, 4.8k, 7.2k, 9.6k, 12k,
14.4k, 19.2k and 38.4k bps with a single 4.9152 MHz crystal
o
XESR
XASY
XHST
TMG
OSC
TXC
TDO
RXC
VSS
CL1
CL2
TSL
RDI
C to 85
o
C
CONTROL
O
S
C
MAS9138
>
_
ASYNC
ASYNC
1
SYNC
SYNC
TO
TO
APPLICATION
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 common modem systems ranging from V.22
to V.34.
Data communication systems
Adapts asynchronous terminals to synchronous
modems
Full or half card PC modems using UART as a data
source
Simplifying data multiplexing systems
RDO
VDD
TDI
MAS9138
12 April, 2006
DA9138.005
1 (10)

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MAS9138A1SD06 Summary of contents

Page 1

ASYNCHRONOUS TO SYNCHRONOUS CONVERTER • Pin compatible with MAS7838 • Interfaces a duplex asynchronous to synchronous channel • Modem speeds of 600, 1.2k, 2.4k, 4.8k, 7.2k, 9.6k, 12k, 14.4k, 19.2k and 38.4k bps with a single 4.9152 MHz crystal DESCRIPTION ...

Page 2

PIN CONFIGURATION PDIP 16 MAS9138N 1 TSL TMG 2 OSC 3 4 TXC* 5 CL1 CL2 6 7 XESR VSS 8 Top marking: YYWW = Year Week, XXXXX.X = Lot Number, PIN DESCRIPTION Pin name Pin no. PDIP SO TSL ...

Page 3

PIN DESCRIPTION Pin name Pin no. PDIP SO TDI 9 9 TDO 10 10 XASY 11 11 XHST 12 12 RDO 13 13 RDI 14 14 RXC 15 15 VDD 16 16 ABSOLUTE MAXIMUM RATINGS Parameter Supply Voltage Storage Temperature ...

Page 4

ELECTRICAL CHARACTERISTICS Inputs Parameter Symbol Input low voltage Input high voltage Input leakage current Input capacitance load Internal pull-up resistor for digital inputs Outputs (TDO, RDO) Parameter Symbol Output low voltage Output high voltage Outputs (OSC) Parameter Symbol Output low ...

Page 5

Data timing Parameter Symbol Low to high logic transition time High to low logic transition time Parameter Symbol TDO delay time after TXC RDI setup time before RXC RDI hold time after RXC Parameter Symbol TDO delay time after TXC ...

Page 6

FUNCTIONS Asynchronous to synchronous converter The synchronous start-stop (transmitter data input), is read into the Tx buffer. When the character is available the data bits are transferred as TDO (transmitter data output) with the synchronous timing signal TXC (transmitter clock). ...

Page 7

APPLICATION INFORMATION Synchronous modem with asynchronous interface The MAS9138 is intended for applications where an asynchronous and synchronous data source must be linked together. A typical case appears in a data modem where the terminal interface of the modem has ...

Page 8

APPLICATION INFORMATION Data multiplexer A third application is a data multiplexing/demultiplexing system. The system accepts data from several sources. These data lines are sampled and the samples are sent through a multiplexer to a demultiplexer. To accomplish this, either a ...

Page 9

PACKAGE OUTLINES TLIN E (300 6.10 7.11 5-7° 7. All dimensions are in accordance with JEDEC standard MS-001. 16 LEAD SO OUTLINE ...

Page 10

... ORDERING INFORMATION Product Code Product MAS9138N MAS9138ASB1 MAS9138A1SD06 LOCAL DISTRIBUTOR MICRO ANALOG SYSTEMS CONTACTS Micro Analog Systems Oy Kamreerintie 2, P.O. Box 51 FIN-02771 Espoo, FINLAND 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 ...

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