Datasheet

+3.0V to+5.5V, 1µA, RS-232/RS-485/422
Multiprotocol Transceivers
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3V to +5.5V, C1–C4 = 0.1µF when tested at +3.3V ±10%; C1 = 0.047µF and C2, C3, C4 = 0.33µF when tested at +5V
±10%; T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RS-232 RECEIVER INPUTS (R1IN, R2IN)
Input Voltage Range -25 25 V
V
CC
= +3.3V 0.6
Input Threshold Low
V
CC
= +5V 0.8
V
V
CC
=+3.3V 2.0
Input Threshold High
V
CC
= +5V 2.4
V
Input Hysteresis 0.5 V
Input Resistance 357kΩ
RS-485/422 RECEIVER INPUTS (NOTE 2)
MAX3160 48
Input Resistance R
IN
-7V < V
CM
< +12V
MAX3161/
MAX3162
96
kΩ
V
CM
= +12V 0.25
MAX3160
V
CM
= -7V -0.15
V
CM
= +12V 0.125
Input Current I
IN
MAX3161/MAX3162
V
CM
= -7V -0.075
mA
Input Differential Threshold V
TH
-200 -50 mV
Input Hysteresis ΔV
TH
30 mV
RS-232 TRANSMITTER OUTPUTS (T1OUT, T2OUT)
Output Voltage Swing
Both transmitter outputs loaded with 3kΩ
to GND
±5 ±5.4 V
Output Resistance V
C C
= V + = V - = 0V , V
T 1OU T
= V
T 2OU T
= + 2V 300 10M Ω
Output Short-Circuit Current T_OUT = GND ±30 ±60 mA
MAX3160/
MAX3161
±125
Output Leakage Current
V
OUT
= ±12V
TE232 = GND or SHDN =
GND
MAX3162 ±25
µA
RS-485/422 TRANSMITTER OUTPUTS (Y, Z)
R = 27Ω
(RS-485)
1.5
Differential Output Voltage V
OD
Figure 1
R = 50Ω
(RS-422)
2
V
Change in Magnitude of
Differential Output Voltage for
Complementary Output States
ΔV
OD
R = 27Ω or 50Ω, Figure 1 -0.2 0.2 V
Common Mode Output Voltage V
OC
R = 27Ω or 50Ω, Figure 1 3 V
Change in Magnitude of
Common Mode Output Voltage
for Complementary Output
States
Δ V
OC
R = 27Ω or 50Ω, Figure 1 0.2 V
Maxim Integrated
3
MAX3160/MAX3161/MAX3162