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NM232DDC 数据表(PDF) 1 Page - C&D Technologies |
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NM232DDC 数据表(HTML) 1 Page - C&D Technologies |
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1 / 5 page  www.cd4power.com NM232DDC Isolated Dual EIA-232-D Transmitter and Receiver KII_NM232DDC.1 Page of 5 ELECTRICAL CHARACTERISTICS Parameter Test conditions MIN. TYP. MAX. Units High threshold input logic, VIH TXIN, SHUTDOWN, ENABLE .8 2.4 V Low threshold input logic, VIL TXIN, SHUTDOWN, ENABLE 0.8 .3 V Input Hysteresis, ΔVT TXIN 0.5 V Leakage Current, IL TXIN , SHUTDOWN or ENABLE = VCC 0 µA Input capacitance, CIN TXIN 5.0 pF Low level output voltage, VOL IOUT = 3.2mA 0.4 V High level output voltage, VOH IOUT = -.0mA 2.4 V Input pull up current VIN = OV 4.0 20 µA ±VREF Current TXOUT = 3kΩ, RXOUT = 2.2kΩ 3.0 mA ELECTRICAL CHARACTERISTICS - EIA-232-D Parameter Test conditions MIN. TYP. MAX. Units Positive going threshold, VT+ RXIN .8 3.0 V Negative going threshold, VT- RXIN 0.6 .2 V Input Hysteresis, ΔVT RXIN 0.6 V Input resistance RXIN 3.0 7.0 kΩ Output voltage, VPP TXOUT, RL=3kΩ to ISO GND ±5.0 ±7.0 V Output leakage current, IL SHUTDOWN=VCC, TXOUT=±5V -0 0 µA Output slew rate, SR RL=3kΩ, CL=2500pF 3.0 30 V/µs Propagation delay, TL Logic to RS232 20 µs Propagation delay, TR RS232 to logic 0 µs Transmission rate RL=3kΩ, CL=2500pF 9.6 kbps Supply voltage, VCC 4.5 5.5 V Supply current, ICC TXIN=0.8V, TXOUT=3kΩ, RXIN=3.0V, RXOUT=2.2kΩ 53 mA Shutdown current ICC SHUTDOWN= .0 0 µA ENABLE input current, IEN ENABLE=OV to VCC .0 µA Shutdown input current, ISHUTDOWN SHUTDOWN=OV to VCC .0 µA MTTF 87 kHrs TEMPERATURE CHARACTERISTICS Parameter MIN. TYP. MAX. Units Operating free-air temperature range 0 70 ºC Storage temperature range -55 25 ºC ABSOLUTE MAXIMUM RATINGS Supply voltage VCC with respect to pin 0 -0.3V to +6V Input voltage to logic pins 3, 7, 8, & with respect to pin 0 -0.3V to VCC+0.3V Voltages with respect to ISO GND pin 22 EIA-232-D input voltage, pins 7 & 8 -30V to +30V EIA-232-D input voltage, pins 9 & 20 -5V to +5V Positive input voltage, pins 6 & 2 +4V Negative input voltage, pin 23 -4V Short circuit on pins 9 & 20 Indefinite Power dissipation 700mW NM232DDC maximum data rate 9.6kbps Lead case temperature .5mm from case for 0 seconds 300ºC ISOLATION CHARACTERISTICS Parameter Conditions MIN. TYP. MAX. Units Isolation test voltage Flash tested for second 500 Vrms . Calulated using MIL-HDBK-27F. All data taken at TA=25°C, VCC=5V. FEATURES n RoHS compliant n Single 5V supply n 50µW low power shutdown n TTL/CMOS Logic compatible n EIA-232-D/E and CCITT V.28 compatible n Dual transmitters and receivers n .5kVrms Isolation DESCRIPTION The NM232DDC is an electrically isolated dual transmitter and receiver designed to inter- face data terminal equipment (DTE) with data communications equipment (DCE). The device provides two data receive channels and two data transmit channels. Each channel is EIA-232-D, EIA-232-E and CCITT V.28 compatible at the interface boundary and TTL/CMOS compatible at the logic connections. No external components are needed and a single 5V input supply powers all functions either side of the isolation boundary. A low-power shutdown mode and high impedance state for receiver outputs is effected via two pins, SHUTDOWN and ENABLE. The device is supplied in a low profile 24 pin DIL package. |
类似零件编号 - NM232DDC |
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类似说明 - NM232DDC |
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