MAX3140EEI-T Maxim Integrated, MAX3140EEI-T Datasheet - Page 32

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MAX3140EEI-T

Manufacturer Part Number
MAX3140EEI-T
Description
UART Interface IC
Manufacturer
Maxim Integrated
Type
SPI/MICROWIRE-Compatible UART with Integrated ESD-Protected RS-485/RS-422 Transceiverr
Datasheet

Specifications of MAX3140EEI-T

Data Rate
115 Kbps, 500 Kbps, 10Mbps
Supply Voltage - Max
5.25 V
Supply Voltage - Min
4.75 V
Supply Current
0.7 mA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Description/function
SPI/MICROWIRE-Compatible UART with integrated RS-485/RS-422 transceivers
Mounting Style
SMD/SMT
Operating Supply Voltage
5 V
SPI/MICROWIRE-Compatible UART with Integrated
True Fail-Safe RS-485/RS-422 Transceivers
Listing 1 is a C-language outline of an interrupt-driven
software driver that interfaces to a MAX3140, providing
an intermediate layer between the bit-manipulation sub-
routine and the familiar PutChar/GetChar subroutines.
Listing 1. Outline for a MAX3140 Software Driver
32
______________________________________________________________________________________
Software Driver
The user must supply code for managing the transmit
and receive queues, as well as the low-level hardware
interface itself. The interrupt control hardware must be
initialized before this driver is called.

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