MAX3110ECWI-T Maxim Integrated, MAX3110ECWI-T Datasheet - Page 9

• Manufacturer Part Number: MAX3110ECWI-T
• Description: UART Interface IC
• Manufacturer: Maxim Integrated
• Type: SPI/MICROWIRE-Compatible UART with Integrated ESD-Protected RS-232 Transceiverr

Specifications of MAX3110ECWI-T

• Number Of Channels: 1
• Data Rate: 250 Kbps
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 4.5 V
• Supply Current: 0.6 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Package / Case: SOIC-28 Wide
• Description/function: SPI/MICROWIRE-Compatible UART with integrated ESD-protected RS-232 transceiver
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 5 V
• Propagation Delay Time Ns: 150 ns

Maxim Integrated
Protected RS-232 Transceivers with Internal Capacitors
PIN
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
7
8
9
SPI/MICROWIRE-Compatible UART and ±15kV ESD-
R2OUT
R1OUT
T1OUT
T2OUT
NAME
DOUT
SHDN
SCLK
R2IN
R1IN
GND
T2IN
T1IN
V
CTS
RTS
C1+
C2+
DIN
IRQ
C1-
C2-
CS
X2
X1
RX
TX
V+
V-
CC
RS-232 Receiver Input 2
RS-232 Receiver Output 2, TTL/CMOS
RS-232 Transmitter lnput 2, TTL/CMOS
RS-232 Transmitter lnput 1, TTL/CMOS
RS-232 Receiver Output 1, TTL/CMOS
RS-232 Receiver Input 1
RS-232 Transmitter Output 1
Positive Supply Voltage
UART Crystal Connection. Leave X2 unconnected when using an external CMOS clock. See the Crystals,
Oscillators, and Ceramic Resonators section.
UART Crystal Connection. X1 also serves as an external CMOS clock input. See the Crystals, Oscillators,
and Ceramic Resonators section.
UART Clear-to-Send Active-Low Input. Read via the CTS bit.
UART Request-to-Send Active-Low Output. Controlled by the RTS bit. Also used to control the driver enable
in RS-485 networks.
UART Asynchronous Serial-Data (receiver) Input. The serial information received from the RS-232 receiver.
A transition on RX while in shutdown generates an interrupt (Table 1).
UART Asynchronous Serial-Data (transmitter) Output
SPI/MICROWIRE Serial-Data Input. Schmitt-trigger Input.
SPI/MICROWIRE Serial-Data Output. High impedance when CS is high.
SPI/MICROWIRE Serial-Clock Input. Schmitt-trigger input.
UART Active-Low Chip-Select Input. DOUT goes high impedance when CS is high. IRQ, TX, and RTS are
always active. Schmitt-trigger input.
UART Active-Low Interrupt Output. Open-drain interrupt output to microprocessor.
Hardware Shutdown Input. Drive SHDN low to shut down the RS-232 transmitters and charge pump. Drive
high for normal operation.
+5.5V generated by the internal charge pump. Do not make any connection to this terminal.
Positive terminal of the internal voltage-doubler charge-pump capacitor. Do not make any connection to
this terminal.
Negative terminal of the internal voltage-doubler charge-pump capacitor. Do not make any connection to
this terminal.
Positive terminal of internal inverting charge-pump capacitor. Do not make any connection to this terminal.
Negative terminal of internal inverting charge-pump capacitor. Do not make any connection to this terminal.
-5.5V generated by the internal charge pump. Do not make any connection to this terminal.
Ground
RS-232 Transmitter Output 2
MAX3110E/MAX3111E
FUNCTION
Pin Description
9