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MC14C89 データシート(PDF) 3 Page - ON Semiconductor |
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MC14C89 データシート(HTML) 3 Page - ON Semiconductor |
3 / 6 page MC14C89B, AB 3 MOTOROLA ANALOG IC DEVICE DATA Figure 1. Timing Diagram tT tPLH 50% Vout 3.0 V 0 V S.G. 1.5 V tPHL Vout VOL VOH RC (Open) 90% S.G. 50% 10% VCC 50 pF tT NOTES: S.G. set to: f = 20 kHz; Duty Cycle = 50%; tr , tf p 5.0 ns STANDARDS COMPLIANCE The MC14C89B and MC14C89AB are designed to comply with EIA–232–E (formerly RS–232), the newer EIA–562 (which is a higher speed version of the EIA–232), and CCITT V.28 Recommendations. EIA–562 was written around modern integrated circuit technology, whereas EIA–232 retains many of the specifications written around the electro–mechanical circuitry in use at the time of its creation. Yet the user will find enough similarities to allow a certain amount of compatibility among equipment built to the two standards. Following is a summary of the key specifications relating to the systems and the receivers. Parameter EIA–232–E EIA–562 Max Data Rate 20 kBaud 38.4 kBaud Asynchronous 64 kBaud Synchronous Max Cable Length 50 feet Based on cable capacitance/data rate Transition Region –3.0 V to +3.0 V –3.0 V to +3.0 V MARK (one, off) More negative than –3.0 V More negative than –3.3 V SPACE (zero, on) More positive than +3.0 V More positive than +3.3 V Fail Safe Output = Binary 1 Output = Binary 1 Open Circuit Input Voltage t2.0V Not Specified Slew Rate (at the driver) p30 V/µs anywhere on the waveform p30 V/µs anywhere on the waveform, q4.0 V/µs between +3.0 V and –3.0 V Loaded Output Voltage (at the driver) 5.0 V p VOp 15 V for loads between 3.0 k Ω and 7.0 kΩ VO q 3.7 V for a load of 3.0 kΩ Figure 2. Typical Output versus Supply Voltage Figure 3. Typical Output Voltage versus Temperature MC14C89AB MC14C89B TA = 25°C –40 VOH(Iout = –20 µA) VCC, SUPPLY VOLTAGE (V) VOL(Iout = 3.2 mA) VOH(Iout = –3.2 mA) 4.5 0 1.0 2.0 3.0 4.0 5.0 25 TA, AMBIENT TEMPERATURE (°C) 57.5 –7.5 85 5.5 5.3 5.1 4.9 4.7 0 1.0 2.0 3.0 4.0 5.0 VOH(Iout = –20 µA) VOH(Iout = –3.2 mA) VOL(Iout = 3.2 mA) MC14C89AB MC14C89B VCC = 5 V |
同様の部品番号 - MC14C89 |
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同様の説明 - MC14C89 |
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