Datasheet

(Voltages referenced to GND.)
Supply Voltage (V
CC
) ..............................................-0.3V to +6V
Input Voltages
TIN‚ ENA, ENB, ENR, ENT, ENRA,
ENRB, ENTA, ENTB ............................. -0.3V to (V
CC
+ 0.3V)
RIN...................................................................................±25V
TOUT (Note 6) .................................................................±15V
ROUT .................................................... -0.3V to (V
CC
+ 0.3V)
Short Circuit Duration (one output at a time)
TOUT to GND ........................................................ Continuous
ROUT to GND .......................................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
28-Pin Wide SO (derate 12.50mW/°C above +70°C) ........1W
40-Pin Plastic DIP (derate 11.11mW/°C above +70°C) 611mW
44-Pin PLCC (derate 13.33mW/°C above +70°C) ........1.07W
Operating Temperature Ranges
MAX225C_ _, MAX24_C_ _ ............................... 0°C to +70°C
MAX225E_ _, MAX24_E_ _ .......................... -40°C to +85°C
Storage Temperature Range ............................ -65°C to +160°C
Lead Temperature (soldering,10s)) .................................+300°C
Soldering Temperature (reflow)
40 PDIP (P40M-2) .......................................................+225°C
All other lead(Pb)-free packages ................................. +260°C
All other packages containing lead(Pb) .......................+240°C
(MAX225, V
CC
= +5.0V ±5%; MAX244–MAX249, V
CC
= +5.0V ±10%, external capacitors C1–C4 = 1μF; T
A
= T
MIN
to T
MAX
; unless
otherwise noted.) (Note 7)
Note 6: Input voltage measured with transmitter output in a high-impedance state, shutdown, or V
CC
= 0V.
PARAMETER CONDITIONS MIN TYP MAX UNITS
RS-232 TRANSMITTERS
Input Logic-Low Voltage 1.4 0.8 V
Input Logic-High Voltage 2 1.4 V
Logic Pullup/lnput Current Tables 1a–1d
Normal operation 10 50
μA
Shutdown ±0.01 ±1
Data Rate Tables 1a–1d, normal operation 120 64 kbps
Output Voltage Swing All transmitter outputs loaded with 3kΩ to GND ±5 ±7.5 V
Output Leakage Current (Shutdown) Tables 1a–1d
V
ENA
, V
ENB
, V
ENT
, V
ENTA
,
V
ENTB
= V
CC
, V
OUT
= ±15V
±0.01 ±25
μA
V
CC
= 0V, V
OUT
= ±15V ±0.01 ±25
Transmitter Output Resistance V
CC
= V+ = V- = 0V, V
OUT
= ±2V (Note 8) 300 10M Ω
Output Short-Circuit Current V
OUT
= 0V ±7 ±30 mA
RS-232 RECEIVERS
RS-232 Input Voltage Operating Range ±25 V
RS-232 Input Logic-Low Voltage V
CC
= +5V 0.8 1.3 V
RS-232 Input Logic-High Voltage V
CC
= +5V 1.8 2.4 V
RS-232 Input Hysteresis V
CC
= +5V 0.2 0.5 1.0 V
RS-232 Input Resistance 3 5 7 kΩ
TTL/CMOS Output Voltage Low I
OUT
= 3.2mA 0.2 0.4 V
TTL/CMOS Output Voltage High I
OUT
= -1.0mA 3.5
V
CC
-
0.2
V
TTL/CMOS Output Short-Circuit Current
Sourcing V
OUT
= V
GND
-2 -10
mA
Sinking V
OUT
= V
CC
10 30
TTL/CMOS Output Leakage Current
Normal operation, outputs disabled,
Tables 1a–1d, 0V ≤ V
OUT
≤ V
CC
, V
ENR_
= V
CC
±0.05 ±0.10 μA
MAX220–MAX249 +5V-Powered, Multichannel
RS-232 Drivers/Receivers
www.maximintegrated.com
Maxim Integrated │ 8
Absolute Maximum Ratings—MAX225/MAX244–MAX249
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics—MAX225/MAX244–MAX249