MAX3160CAP+T Maxim Integrated Products, MAX3160CAP+T Datasheet - Page 16

• Manufacturer Part Number: MAX3160CAP+T
• Description: IC TXRX RS232/485/422 20SSOP
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of MAX3160CAP+T

• Number Of Drivers/receivers: 2/2
• Protocol: RS232, RS422, RS485
• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RS-232 Transmitters
+3.0V to+5.5V, 1µA, RS-232/RS-485/422
Multiprotocol Transceivers
The MAX3160/MAX3161/MAX3162 maintain the RS-232
±5.0V required minimum transmitter output voltage even
at high data rates. Figure 11 shows a transmitter loop-
back test circuit. Figure 12 shows a loopback test result
at 250kbps, and Figure 13 shows the same test at
1000kbps. Figure 12 demonstrates a single slew-rate
limited transmitter driven at 250kbps (FAST = GND) into
an RS-232 load in parallel with 1000pF. Figure 13 shows
Table 1. MAX3160
16
Table 2. MAX3161
Table 3. MAX3162
SHDN
SHDN
SHDN
______________________________________________________________________________________
0
1
1
1
0
1
1
1
X
0
1
1
RS-485/
RS485
R R R R S S S S 2 2 2 2 3 3 3 3 2 2 2 2
RS-232
INPUTS
INPUTS
TE232
INPUTS
X
0
0
1
X
0
0
1
X
0
1
1
DE485/T2IN
DE485/T2IN
DI/T1IN,
T1IN,T2IN
DI/T1IN,
X
X
0
1
X
X
0
1
X
X
0
1
High Data Rates
RS-485 Mode
1/8 Unit Load
Z(B)/T1OUT,
Y(A)/T2OUT
OUTPUTS
OUTPUTS
OUTPUTS
T1OUT,
T1OUT,
T2OUT
T2OUT
High-Z
High-Z
High-Z
High-Z
1
0
1
0
1
0
a single transmitter driven at 1Mbps (FAST asserted),
loaded with an RS-232 receiver in parallel with 1000pF.
These transceivers maintain the RS-232 ±5.0V minimum
transmitter output voltage at data rates up to 1Mbps.
The standard RS-485 receiver input impedance is 12kΩ
(one-unit load), and the standard driver can drive up to
32-unit loads. The MAX3160 has a 1/4-unit load receiv-
er input impedance (48kΩ), allowing up to 128 trans-
Table 5. MAX3161
Table 4. MAX3160
Table 6. MAX3162
SHDN
SHDN
SHDN
X
X
X
X
X
X
X
X
X
X
X
X
RS-485/
RS-485/
R R R R S S S S - - - - 2 2 2 2 3 3 3 3 2 2 2 2
RE232
R R R R S S S S - - - - 2 2 2 2 3 3 3 3 2 2 2 2
INPUTS
INPUTS
INPUTS
1
0
0
0
256 Transceivers on the Bus
0
0
0
1
0
0
0
1
Inputs open
Inputs Open
R1IN, R2IN
Inputs Open
R1IN, R2IN
B/R1IN,
A/R2IN
X
0
1
0
1
X
X
0
1
RS-232 Receivers
Truth Tables
RS-485 mode
RS-485 mode
RO/R2OUT in
RO/R2OUT in
RO/R2OUT
RO/R2OUT
OUTPUTS
OUTPUTS
OUTPUTS
R1OUT,
R1OUT,
R1OUT
R1OUT
High-Z,
High-Z,
R1OUT,
R2OUT
High-Z
1
0
1
1
0
1
1
0
1