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| 型号： | MAX244EQH+TD |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 33/38页 |
| 文件大小： | 0K |
| 描述： | IC RS-232 DRVR/RCVR 44-PLCC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 8/10 |
| 规程： | RS232 |
| 电源电压： | 4.75 V ~ 5.25 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LCC（J 形引线） |
| 供应商设备封装： | 44-PLCC（16.59x16.59） |
| 包装： | 带卷 (TR) |
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+5V-Powered, Multichannel RS-232
Drivers/Receivers
__________________________________________Typical Operating Characteristics
MAX220/MAX222/MAX232A/MAX233A/MAX242/MAX243
10
8
-10
0
5
15
25
OUTPUT VOLTAGE vs. LOAD CURRENT
-4
-6
-8
-2
6
4
2
MAX220-01
LOAD CURRENT (mA)
OUTPUT
VOLTAGE
(V)
10
0
20
0.1
μF
EITHER V+ OR V- LOADED
VCC = +5V
NO LOAD ON
TRANSMITTER OUTPUTS
(EXCEPT MAX220, MAX233A)
V- LOADED, NO LOAD ON V+
V+ LOADED, NO LOAD ON V-
1
μF
1
μF
0.1
μF
11
10
4
010
40
60
AVAILABLE OUTPUT CURRENT
vs. DATA RATE
6
5
7
9
8
MAX220-02
DATA RATE (kb/s)
OUTPUT
CURRENT
(mA)
20
30
50
OUTPUT LOAD CURRENT
FLOWS FROM V+ TO V-
VCC = +5.25V
ALL CAPS
1
μF
ALL CAPS
0.1
μF
VCC = +4.75V
+10V
-10V
MAX222/MAX242
ON-TIME EXITING SHUTDOWN
+5V
0V
MAX220-03
500
μs/div
V+,
V-
VOLTAGE
(V)
1
μF CAPS
V+
V-
SHDN
0.1
μF CAPS
1
μF CAPS
0.1
μF CAPS
ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)
(VCC = +5V ±10%, C1–C4 = 0.1F MAX220, C1 = 0.047F, C2–C4 = 0.33F, TA = TMIN to TMAX unless otherwise noted.) (Note 3)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
MAX222/MAX232A/MAX233/
MAX242/MAX243
0.5
1
tPHLR, Figure 2
MAX220
0.6
3
MAX222/MAX232A/MAX233/
MAX242/MAX243
0.6
1
Receiver Propagation Delay RS-232 to
TLL (Normal Operation)
tPLHR, Figure 2
MAX220
0.8
3
μs
tPHLS, Figure 2
MAX242
0.5
10
Receiver Propagation Delay RS-232 to
TLL (Shutdown)
tPHLS, Figure 2
MAX242
2.5
10
μs
Receiver-Output Enable Time
tER
MAX242, Figure 3
125
500
ns
Receiver-Output Disable Time
tDR
MAX242, Figure 3
160
500
ns
Transmitter-Output Enable Time
(
SHDN Goes High)
tET
MAX222/MAX242, 0.1μF
caps (includes charge-pump
start-up), Figure 4
250
μs
Transmitter-Output Disable Time
(
SHDN Goes Low)
tDT
MAX222/MAX242,
0.1μF caps, Figure 4
600
ns
MAX222/MAX232A/MAX233/
MAX242/MAX243
300
Transmitter + to - Propagation Delay
Difference (Normal Operation)
tPHLT - tPLHT
MAX220
2000
ns
MAX222/MAX232A/MAX233/
MAX242/MAX243
100
Receiver + to - Propagation Delay
Difference (Normal Operation)
tPHLR - tPLHR
MAX220
225
ns
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.
4
Maxim Integrated
MAX220–MAX249
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