MAX240CMH-T Maxim Integrated, MAX240CMH-T Datasheet - Page 4

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MAX240CMH-T

Manufacturer Part Number
MAX240CMH-T
Description
RS-232 Interface IC
Manufacturer
Maxim Integrated
Series
MAX220, MAX222, MAX223, MAX225, MAX230, MAX231, MAX232, MAX232A, MAX233, MAX233A, MAX234, MAX235, MAX236, MAX237, MAX238, MAX239, MAX240, MAX241, MAX242, MAX243, MAX244, MAX245, MAX246, MAX247, MAX248, MAX249r
Datasheet

Specifications of MAX240CMH-T

Data Rate
120 Kbps
Operating Supply Voltage
5 V
Supply Current
15 mA
Operating Temperature Range
0 C to + 70 C
Mounting Style
SMD/SMT
Function
Transceiver
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Number Of Drivers
5
Number Of I/os
20
Number Of Receivers
5
Propagation Delay Time Ns
10 us
Shutdown
Yes
MAX220–MAX249
MAX220–MAX249
4
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)
(V
Note 3: All units are production tested at hot. Specifications over temperature are guaranteed by design.
Note 4: MAX243 R2OUT is guaranteed to be low when R2IN ≥ 0V or is unconnected.
__________________________________________Typical Operating Characteristics
Receiver Propagation Delay RS-232 to
TLL (Normal Operation)
Receiver Propagation Delay RS-232 to
TLL (Shutdown)
Receiver-Output Enable Time
Receiver-Output Disable Time
Transmitter-Output Enable Time
(
Transmitter-Output Disable Time
(
Transmitter + to - Propagation Delay
Difference (Normal Operation)
Receiver + to - Propagation Delay
Difference (Normal Operation)
CC
-10
10
-2
-4
-6
-8
8
6
4
2
0
= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, T
Goes High)
Goes Low)
0
OUTPUT VOLTAGE vs. LOAD CURRENT
EITHER V+ OR V- LOADED
V
NO LOAD ON
TRANSMITTER OUTPUTS
(EXCEPT MAX220, MAX233A)
V- LOADED, NO LOAD ON V+
CC
= +5V
PARAMETER
5
LOAD CURRENT (mA)
0.1μF
10
V+ LOADED, NO LOAD ON V-
MAX220/MAX222/MAX232A/MAX233A/MAX242/MAX243
15
1μF
20
1μF
0.1μF
25
t
t
t
t
t
t
t
t
t
t
PHLR
PLHR
PHLS
PHLS
ER
DR
ET
DT
PHLT
PHLR
, Figure 2
, Figure 2
, Figure 2
, Figure 2
10
- t
11
- t
9
8
7
6
5
4
PLHT
PLHR
0
ALL CAPS
1μF
ALL CAPS
0.1μF
AVAILABLE OUTPUT CURRENT
10
CONDITIONS
vs. DATA RATE
20
MAX222/MAX232A/MAX233/
MAX242/MAX243
MAX220
MAX222/MAX232A/MAX233/
MAX242/MAX243
MAX220
MAX242
MAX242
MAX242, Figure 3
MAX242, Figure 3
MAX222/MAX242, 0.1μF
caps (includes charge-pump
start-up), Figure 4
MAX222/MAX242,
0.1μF caps, Figure 4
MAX222/MAX232A/MAX233/
MAX242/MAX243
MAX220
MAX222/MAX232A/MAX233/
MAX242/MAX243
MAX220
DATA RATE (kb/s)
OUTPUT LOAD CURRENT
FLOWS FROM V+ TO V-
30
V
V
CC
CC
= +5.25V
= +4.75V
40
A
50
= T
MIN
60
to T
MAX
+10V
-10V
+5V
+5V
0V
0V
‚ unless otherwise noted.) (Note 3)
MIN
V+
V-
ON-TIME EXITING SHUTDOWN
SHDN
2000
TYP
125
160
250
600
300
100
225
0.5
0.6
0.6
0.8
0.5
2.5
0.1μF CAPS
MAX222/MAX242
0.1μF CAPS
1μF CAPS
1μF CAPS
500μs/div
MAX
500
500
10
10
1
3
1
3
Maxim Integrated
V-
V+
UNITS
μs
μs
ns
ns
μs
ns
ns
ns