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MAX233 Datasheet(PDF) 6 Page - Maxim Integrated Products

Part No. MAX233
Description  5V-Powered, Multichannel RS-232 Drivers/Receivers
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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 6 page
background image
mA
+5V-Powered, Multichannel RS-232
Drivers/Receivers
6
_______________________________________________________________________________________
V
0.8
1.2
PARAMETER
MIN
TYP
MAX
UNITS
CONDITIONS
Normal operation
SHDN = 5V (MAX223)
SHDN = 0V (MAX235/236/240/241)
1.7
2.4
RS-232 Input Threshold Low
TA = +25°C,
VCC = 5V
0.6
1.5
V
RS-232 Input Threshold High
TA = +25°C,
VCC = 5V
Shutdown (MAX223)
SHDN = 0V,
EN = 5V (R4IN‚ R5IN)
1.5
2.4
ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241 (continued)
(MAX223/230/232/234/236/237/238/240/241, VCC = +5V ±10; MAX233/MAX235, VCC = 5V ±5%‚ C1–C4 = 1.0µF; MAX231/MAX239,
VCC = 5V ±10%; V+ = 7.5V to 13.2V; TA = TMIN to TMAX; unless otherwise noted.)
Shutdown (MAX223)
SHDN = 0V,
EN = 5V (R4IN, R5IN)
Normal operation
SHDN = 5V (MAX223)
SHDN = 0V (MAX235/236/240/241)
RS-232 Input Hysteresis
VCC = 5V, no hysteresis in shutdown
0.2
0.5
1.0
V
RS-232 Input Resistance
TA = +25°C, VCC = 5V
35
7
k
TTL/CMOS Output Voltage Low
IOUT = 1.6mA (MAX231/232/233, IOUT = 3.2mA)
0.4
V
TTL/CMOS Output Voltage High
IOUT = -1mA
3.5
VCC - 0.4
V
TTL/CMOS Output Leakage Current
0V
≤ ROUT ≤ VCC; EN = 0V (MAX223);
EN = VCC (MAX235–241 )
0.05
±10
µA
MAX223
600
ns
Receiver Output Enable Time
Normal
operation
MAX235/236/239/240/241
400
MAX223
900
ns
Receiver Output Disable Time
Normal
operation
MAX235/236/239/240/241
250
Normal operation
0.5
10
µs
SHDN = 0V
(MAX223)
440
Propagation Delay
RS-232 IN to
TTL/CMOS OUT,
CL = 150pF
640
3
5.1
30
V/µs
MAX231/MAX232/MAX233, TA = +25°C, VCC = 5V,
RL = 3k
Ω to 7kΩ, CL = 50pF to 2500pF, measured from
+3V to -3V or -3V to +3V
430
Transmitter Output Resistance
VCC = V+ = V- = 0V, VOUT = ±2V
300
Transmitter Output Short-Circuit
Current
±10
mA
tPHLS
tPLHS
Transition Region Slew Rate
MAX223/MAX230/MAX234–241, TA = +25°C, VCC = 5V,
RL = 3k
Ω to 7kΩ‚ CL = 50pF to 2500pF, measured from
+3V to -3V or -3V to +3V




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