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參數(shù)資料
型號(hào)： MAX234EWE+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 38/38頁(yè)
文件大?。?/td> 0K
描述： IC RS-232 DRVR/RCVR 16-SOIC
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 1,000
類(lèi)型： 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 4/0
規(guī)程： RS232
電源電壓： 4.5 V ~ 5.5 V
安裝類(lèi)型： 表面貼裝
封裝/外殼： 16-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 16-SOIC W
包裝： 帶卷 (TR)
+5V-Powered, Multichannel RS-232
Drivers/Receivers
Supply Voltage Range
4.75
5.25
V
Transmitter Enable Time
MAX225
10
20
tET
No load
MAX244–MAX249
11
30
510
30
MAX225
40
VCC Supply Current
(Normal Operation)
3k
Ω loads on
all outputs
MAX244–MAX249
57
mA
Transition Slew Rate
825
CL = 50pF to 2500pF, RL = 3k
Ω to 7kΩ, VCC = +5V,
TA = +25°C, measured from +3V to -3V or -3V to +3V
TA = TMIN to TMAX
CONDITIONS
50
V/s
MAX246–MAX249
(excludes charge-pump startup)
Shutdown Supply Current
A
5
tPHLT, Figure 1
1.3
3.5
s
tPLHT, Figure 1
1.5
3.5
Transmitter Disable Time
Transmitter Propagation Delay
TLL to RS-232 (Normal Operation)
s
tDT, Figure 4
100
ns
Transmitter + to - Propagation
Delay Difference (Normal Operation)
tPHLT - tPLHT
UNITS
MIN
TYP
MAX
350
PARAMETER
ns
Receiver + to - Propagation
Delay Difference (Normal Operation)
tPHLR - tPLHR
350
ns
4.5
5.5
MAX244–MAX249
MAX225
Leakage current
±1
Logic-low voltage
1.4
0.8
Control Input
Logic-high voltage
2.4
1.4
V
A
TA = +25°C
tPHLR, Figure 2
0.6
1.5
tPLHR, Figure 2
0.6
1.5
Receiver Propagation Delay
TLL to RS-232 (Normal Operation)
s
tPHLS, Figure 2
0.6
10
tPLHS, Figure 2
3.0
10
Receiver Propagation Delay
TLL to RS-232 (Low-Power Mode)
s
Receiver-Output Enable Time
tER, Figure 3
100
500
ns
Receiver-Output Disable Time
tDR, Figure 3
100
500
ns
MAX225/MAX245–MAX249
(includes charge-pump startup)
10
ms
POWER SUPPLY AND CONTROL LOGIC
AC CHARACTERISTICS
Note 7: All units production tested at hot. Specifications over temperature are guaranteed by design.
Note 8: The 300
Ω minimum specification complies with EIA/TIA-232E, but the actual resistance when in shutdown mode or VCC =
0V is 10M
Ω as is implied by the leakage specification.
ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249 (continued)
(MAX225, VCC = +5.0V ±5%; MAX244–MAX249, VCC = +5.0V ±10%, external capacitors C1–C4 = 1F; TA = TMIN to TMAX; unless
otherwise noted.) (Note 7)
Maxim Integrated
9
MAX220–MAX249
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