RS-232(2011) Просмотр технического описания (PDF) - Exar Corporation
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RS-232 Datasheet PDF : 21 Pages
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SP339E
REV. 1.0.0
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
ELECTRICAL CHARACTERISTICS
UNLESS OTHERWISE NOTED:
VCC = +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1µF; TA = TMIN to TMAX. Typical values are at VCC = 3.3V, TA = +25°C.
SYMBOL
PARAMETERS
MIN. TYP. MAX. UNITS
CONDITIONS
DC CHARACTERISTICS
ICC
Supply Current (RS-232)
ICC
Supply Current (RS-485)
ICC
Vcc Shutdown Current
2
8
mA No load, idle inputs
2
8
mA No load, idle inputs
1
10 µA ENABLE = 0V
TRANSMITTER and LOGIC INPUT PINS: Pins 3, 4, 6, 11, 12, 14, 15, 17-19
VIH
Logic Input Voltage High
2.0
VIH
Logic Input Voltage High
2.4
VIL
Logic Input Voltage Low
0.8
IIL
Logic Input Leakage Current Low
1
IIH
Logic Input Leakage Current High
1
IPD
VHYS
Logic Input Pull-down Current
Logic Input Hysteresis
50
200
V VCC = 3.3V
V VCC = 5.0V
V
µA Input Low (VIN = 0V)
µA Input High (VIN = VCC),
pins 3, 4 and 6
µA Input High (VIN = VCC),
pins 11, 12, 14, 15, 17-19
mV
RECEIVER OUTPUTS: Pins 1, 2, 5, 7, 8
VOH
Receiver Output Voltage High
VCC-0.6
V IOUT = -1.5mA
VOL
Receiver Output Voltage Low
0.4
V IOUT = 2.5mA
IOSS
Receiver Output ShortCircuit Current
±20 ±60 mA 0 ≤ VO ≤ VCC
IOZ
Receiver Output Leakage Current
±0.1 ±1
µA 0 ≤ VO ≤ VCC,
Receivers disabled
5
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