MAX244C-D View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX244C-D Datasheet PDF : 36 Pages
| |||
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)
(VCC = +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, TA = TMIN to TMAX‚ unless otherwise noted.)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Receiver Propagation Delay RS-232 to
TLL (Normal Operation), Figure 2
tPHLR
tPLHR
MAX222/MAX232A/MAX233/
MAX242/MAX243
MAX220
MAX222/MAX232A/MAX233/
MAX242/MAX243
MAX220
0.5
1
0.6
3
µs
0.6
1
0.8
3
Receiver Propagation Delay RS-232 to
TLL (Shutdown), Figure 2
tPHLS
tPHLS
MAX242
MAX242
0.5
10
µs
2.5
10
Receiver-Output Enable Time, Figure 3 tER
Receiver-Output Disable Time, Figure 3 tDR
Transmitter-Output Enable Time (SHDN
Goes High), Figure 4
tET
Transmitter-Output Disable Time (SHDN
Goes Low), Figure 4
tDT
Transmitter + to - Propagation Delay
Difference (Normal Operation)
tPHLT - tPLHT
MAX242
MAX242
MAX222/MAX242, 0.1µF
caps (includes charge-pump
start-up)
MAX222/MAX242,
0.1µF caps
MAX222/MAX232A/MAX233/
MAX242/MAX243
MAX220
125
500
ns
160
500
ns
250
µs
600
ns
300
ns
2000
Receiver + to - Propagation Delay
Difference (Normal Operation)
tPHLR - tPLHR
MAX222/MAX232A/MAX233/
MAX242/MAX243
100
ns
MAX220
225
__________________________________________Typical Operating Characteristics
MAX220/MAX222/MAX232A/MAX233A/MAX242/MAX243
AVAILABLE OUTPUT CURRENT
MAX222/MAX242
OUTPUT VOLTAGE vs. LOAD CURRENT
vs. DATA RATE
ON-TIME EXITING SHUTDOWN
10
1µF
8
6 EITHER V+ OR V- LOADED
4 VCC = ±5V
NO LOAD ON
2 TRANSMITTER OUTPUTS
0.1µF
0 (EXCEPT MAX220, MAX233A)
-2 V- LOADED, NO LOAD ON V+
-4
0.1µF
1µF
11
10
ALL CAPS
9
1µF
8
7
ALL CAPS
0.1µF
6
OUTPUT LOAD CURRENT
FLOWS FROM V+ TO V-
VCC = +5.25V
VCC = +4.75V
+10V
V+
1µF CAPS
V+
+5V
0.1µF CAPS
+5V
SHDN
0V
0V
1µF CAPS
-6
-8
V+ LOADED, NO LOAD ON V-
-10
0
5
10
15
20
25
5
4
0
10 20
30 40 50 60
V-
-10V
0.1µF CAPS
V-
500µs/div
LOAD CURRENT (mA)
DATA RATE (kbits/sec)
4 _______________________________________________________________________________________
|
|
Share Link: 