MAX239 Maxim Integrated Products, MAX239 Datasheet - Page 9

• Manufacturer Part Number: MAX239
• Description: (MAX220 - MAX249) +5V-Powered / Multichannel RS-232 Drivers/Receivers
• Manufacturer: Maxim Integrated Products

ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249 (continued)
(MAX225, V
erwise noted.)
Note 5: The 300Ω minimum specification complies with EIA/TIA-232E, but the actual resistance when in shutdown mode or V
POWER SUPPLY AND CONTROL LOGIC
AC CHARACTERISTICS
Operating Supply Voltage
V
(Normal Operation)
Shutdown Supply Current
Control Input
Transition Slew Rate
Transmitter Propagation Delay
TLL to RS-232 (Normal Operation),
Figure 1
Receiver Propagation Delay
TLL to RS-232 (Normal Operation),
Figure 2
Receiver Propagation Delay
TLL to RS-232 (Low-Power Mode),
Figure 2
Transmitter + to - Propagation
Delay Difference (Normal Operation)
Receiver + to - Propagation
Delay Difference (Normal Operation)
Receiver-Output Enable Time, Figure 3 t
Receiver-Output Disable Time, Figure 3 t
Transmitter Enable Time
Transmitter Disable Time, Figure 4
CC
Supply Current
0V is 10MΩ as is implied by the leakage specification.
CC
PARAMETER
= 5.0V ±5%; MAX244–MAX249, V
_______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
No load
3kΩ loads on
all outputs
T
T
Leakage current
Threshold low
Threshold high
C
T
t
t
t
t
t
t
t
t
t
t
PHLT
PLHT
PHLR
PLHR
PHLS
PLHS
PHLT
PHLR
ER
DR
ET
DT
A
A
A
L
= +25°C, measured from +3V to -3V or -3V to +3V
= +25°C
= T
= 50pF to 2500pF, R
- t
- t
MIN
CC
PLHT
PLHR
to T
= +5.0V ±10%, external capacitors C1–C4 = 1µF; T
MAX
MAX225
MAX244–MAX249
MAX225
MAX244–MAX249
MAX225
MAX244–MAX249
MAX246–MAX249
(excludes charge-pump startup)
MAX225/MAX245–MAX249
(includes charge-pump startup)
CONDITIONS
L
= 3kΩ to 7kΩ, V
CC
Drivers/Receivers
= 5V,
4.75
MIN
4.5
2.4
5
A
= T
TYP
350
350
100
100
100
1.4
1.4
1.3
1.5
0.6
0.6
0.6
3.0
10
11
40
57
10
10
MIN
8
5
to T
MAX
MAX
5.25
500
500
5.5
0.8
3.5
3.5
1.5
1.5
20
30
25
50
±1
30
10
10
; unless oth-
UNITS
CC
V/µs
mA
µA
µA
ms
µs
µs
µs
ns
ns
ns
ns
µs
ns
V
V
=
9