MAX218E 查看數據表（PDF） - Maxim Integrated
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MAX218E Datasheet PDF : 8 Pages
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1.8V to 4.25V-Powered,
True RS-232 Dual Transceiver
ABSOLUTE MAXIMUM RATINGS
Supply Voltages
VCC ....................................................................-0.3V to +4.6V
V+ .......................................................... (VCC - 0.3V) to +7.5V
V- .......................................................................+0.3V to -7.4V
VCC to V- ..........................................................................+12V
LX ................................................................-0.3V to (1V + V+)
InpTu_tINV,oEltaNg,eS—sH—D—N– ................................................. -0.3V to +7V
R_IN .................................................................................±25V
Output Voltages
T_OUT.............................................................................±15V)
R_OUT ....................................................-0.3V to (VCC + 0.3V)
Short-Circuit Duration, R_OUT, T_OUT to GND ....... Continuous
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 11.11mW/°C above +70°C) ..........889mW
Wide SO (derate 10.00mW/°C above +70°C)..............800mW
SSOP (derate 8.00mW/°C above +70°C) ...................640mW
Operating Temperature Ranges
MAX218C_ P ..................................................... 0°C to +70°C
MAX218E_ P ................................................... -40°C to +85°C
Storage Temperature Range ........................... -65°C to +150°C
Lead Temperature (soldering, 10sec) ........................... +300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, VCC = 1.8V to 4.25V, C1 = 0.47µF, C2 = C3 = C4 = 1µF, L1 = 15µH, TA = TMIN to TMAX, unless otherwise noted.
Typical values are at VCC = 3.0V, TA = +25°C.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
DC CHARACTERISTICS
Operating Voltage Range
1.8
Supply Current (Note 1)
No load, VCC = EN = S—H—D—N– = 3.0V, TA = +25°C
S—H—D—N– = EN = 0V, all R_INs static
Shutdown Supply Current
S—H—D—N– = 0V, EN = VCC, all R_INs static
4.25
V
1.9
3.0
mA
0.04
10
µA
0.04
10
LOGIC
Input Logic Threshold Low
Input Logic Threshold High
Input Hysteresis
Input Leakage Current
T_IN, EN, S—H—D—N–
T_IN, EN, S—H—D—N–
T_IN
T_IN, EN, S—H—D—N– = 0V or VCC
0.33 x VCC
V
0.67 x VCC
V
0.1
V
0.001
±1
µA
Output Voltage Low
R_OUT, IOUT = 1.0mA
0.4
V
Output Voltage High
R_OUT, IOUT = -0.4mA
Output Leakage Current
R_OUT, 0V ≤ R_OUT ≤ VCC, EN = 0V
EIA/TIA-232E RECEIVER INPUTS
VCC - 0.25 VCC - 0.08
V
0.05
±10
µA
Input Voltage Range
-25
+25
V
Input Threshold Low
Input Threshold High
VCC = 2.0V to 4.25V
VCC = 1.8V to 4.25V
VCC = 1.8V to 4.25V
VCC = 1.8V to 3.6V
0.4
V
0.3
3.0
V
2.8
Input Hysteresis
0.7
V
Input Resistance
-15V < R_IN < +15V
3
5
7
kΩ
EIA/TIA-232E TRANSMITTER OUTPUTS
Output Voltage Swing
All transmitter outputs loaded with 3kΩ to ground
±5
±6
V
Output Resistance
VCC = 0V, -2V < T_OUT < +2V
300
Ω
Output Short-Circuit Current
±24
±100
mA
Note 1: Entire supply current for the circuit of Figure 1.
2 _______________________________________________________________________________________
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