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ST3237BPR 数据表(PDF) 7 Page - STMicroelectronics |
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ST3237BPR 数据表(HTML) 7 Page - STMicroelectronics |
7 / 15 page ST3237 Electrical characteristics 7/15 Note: Transmitter Skew is measured at the transmitter zero cross points Table 6. Receiver (C1 - C4 = 0.1µF tested at 3.3V±10%, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol Parameter Test Conditions Min. Typ. Max. Unit VRIN Receiver input voltage operating range -25 25 V VRIL RS-232 input threshold low TA = 25°C, VCC = 3.3V TA = 25°C, VCC = 5V 0.6 0.8 1.2 1.5 V V VRIH RS-232 input threshold high TA = 25°C, VCC = 3.3V TA = 25°C, VCC = 5V 1.5 1.8 2.4 2.4 V V VRIHYS Input hysteresis 0.3 V RRIN Input resistance TA = 25°C 3 5 7 K Ω Table 7. Timing characteristics (C1 - C4 = 0.1mF tested at 3.3V±10%, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol Parameter Test Conditions Min. Typ. Max. Unit DR Maximum data rate RL = 3KΩCL= 1000pF one transmitter switching, VHSCI=GND 250 Kbps RL = 3KΩCL= 250pF one transmitter switching, VHSCI=VCC VCC= 3 to 5.55V 1000 Kbps tPHLR tPLHR Propagation delay input to output RIN to ROUT, CL = 150pF 0.15 µs tT_SKEW Transmitter skew |tPHL - tTLH|, VHSCI=GND 100 ns |tPHL - tTLH|, VHSCI=VCC 60 ns tR_SKEW Receiver skew |tPHL - tTLH|50 ns tOER Receiver output enable time Normal operation 80 ns tODR Receiver output disable time Normal operation 130 ns SRT Transition slew rate TA = 25°C RL = 3 to 7KΩ VCC = 3.3V measured from +3V to -3V or -3V to +3V CL = 150pF to 1000pF, VHSCI=GND CL = 150pF to 1000pF, VHSCI=VCC CL = 150pF to 2500pF, VHSCI=GND 6 24 4 30 150 30 V/ µs V/ µs V/ µs |
类似零件编号 - ST3237BPR |
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类似说明 - ST3237BPR |
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