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MC145405DW 데이터시트(PDF) 3 Page - LANSDALE Semiconductor Inc. |
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MC145405DW 데이터시트(HTML) 3 Page - LANSDALE Semiconductor Inc. |
3 / 8 page www.lansdale.com Page 3 of 8 Issue A ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND, except where noted) Rating Symbol Value Unit DC Supply Voltage (VDD ≥ VCC) VDD VSS VCC – 0.5 to + 13.5 + 0.5 to – 13.5 – 0.5 to + 6.0 V Input Voltage Range Rx1 – Rx n DI1 – DI n VIR VSS – 15 to VDD + 15 0.5 to VCC + 15 V DC Current Drain per Pin I ± 00 mA Power Dissipation PD 1 W Operating Temperature Range TA – 40 to + 85 °C Storage Temperature Range Tstg – 85 to + 150 °C DC ELECTRICAL CHARACTERISTICS (All polarities referenced to GND = 0 V, TA = – 40 to + 85°C) Parameter Symbol Min Typ Max Unit DC Supply Voltage VDD VSS VCC 4.5 – 4.5 4.5 5 to 12 – 5 to – 12 5 13.2 – 13.2 5.5 V Quiescent Supply Current (Outputs Unloaded, Inputs Low) VDD = + 12 V VSS = – 12 V VCC = + 5 V IDD ISS ICC — — — 425 – 400 110 635 – 600 200 µA RECEIVER ELECTRICAL SPECIFICATIONS (Voltage polarities referenced to GND = 0 V, VDD = + 12 V, VSS = – 12 V, TA = – 40 to + 85°C, VCC = + 5 V, ± 10%) Characteristic Symbol Min Typ Max Unit Input Turn–On Threshold Rx1 – Rx n VDO = VOL Von 1.35 1.8 2.35 V Input Turn–Off Threshold Rx1 – Rx n VDO = VOH Voff 0.75 1 1.25 V Input Threshold Hysteresis ∆ = Von – Voff Vhys 0.6 0.8 — V Input Resistance (VSS – 15 V) ≤ V Rx1 – Rxn ≤ (VDD + 15 V) Rin 3 5.4 7 k High Level Output Voltage Iout = – 20 µA VRx = – 3 to – 25 V* (DO1 – DOn)Iout = – 1.0 mA VOH 4.9 3.8 4.9 4.3 — — V Low Level Output Voltage Iout = + 2 mA VRx = + 3 to + 25 V* (DO1 – DOn)Iout = + 4 mA VOL — — 0.02 0.5 0.5 0.7 V * This is the range of input voltages as specified by EIA–232–E to cause a receiver to be in the high or low. This device contains circuitry to protect the inputs and outputs against damage due to high static voltages or electric fields; however, it is advised that normal precautions be taken to avoid applications of any voltage higher than maximum rated voltages to this high imped- ance circuit. For proper operation it is recommended that Vout and Vin be constrained to the ranges described as follows: Digital I/O: Driver Inputs (DI): (GND ≤ VDI ≤ VCC). Receiver Outputs (DO): (GND ≤ VDO ≤ VCC). EIA–232 I/O: Driver Outputs (Tx): (VSS ≤ VTx1 – Txn ≤ VDD). Receiver Inputs (Rx): VSS – 15 V ≤ VRx1 – Rxn ≤ VDD + 15 V). Reliability of operation is enhanced if unused outputs are tied off to an appropriate logic voltage level (e.g., either GND or VCC for DI, and GND for Rx). LANSDALE Semiconductor, Inc. ML145403, ML145404, ML145405, ML145408 |
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