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DS14C232CN 数据表(PDF) 6 Page - National Semiconductor (TI) |
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DS14C232CN 数据表(HTML) 6 Page - National Semiconductor (TI) |
6 / 12 page Parameter Measurement Information (Continued) Pin Descriptions V CC (Pin 16) Power supply pin for the device, +5V (±10%). V+ (Pin 2) Positive supply for TIA/EIA-232-E drivers. Recommended external capacitor: C4-1.0 µF (6.3V). Capacitor value should be larger than 1 µF. This supply is not intended to be loaded externally. V− (Pin 6) Negative supply for TIA/EIA-232-E drivers. Recommended external capacitor: C3-1.0 µF (16V). Capacitor value should be larger than 1 µF. This supply is not intended to be loaded externally. C1+, C1− (Pins 1, 3) External capacitor connection pins. Recommended capaci- tor: 1.0 µF (6.3V). Capacitor value should be larger than 1µF. C2+, C2− (Pins 4, 5) External capacitor connection pins. Recommended capaci- tor: 1.0 µF (16V). Capacitor value should be greater than 1µF. D IN1, DIN2 (Pins 11, 10) Driver input pins are TTL/CMOS compatible. Inputs of un- used drivers may be left open, an internal active pull-up re- sistor (500 k Ω minimum, typically 5 MΩ) pulls input HIGH. Output will be LOW for open inputs. D OUT1, DOUT2 (Pins 14, 7) Driver output pins conform to TIA/EIA-232-E levels. R IN1, RIN2 (Pins 13, 8) Receiver input pins accept TIA/EIA-232-E input voltages (±25V). Receivers feature a noise filter and guaranteed hys- teresis of 100 mV. Unused receiver input pins may be left open. Internal input resistor 4.7 k Ω pulls input low, providing a failsafe high output. R OUT1, ROUT2 (Pins 12, 9) Receiver output pins are TTL/CMOS compatible. Receiver output HIGH voltage is specified for both CMOS and TTL load conditions. GND (Pin 15) Ground Pin. DS010744-5 FIGURE 3. Receiver Load Circuit DS010744-6 FIGURE 4. Receiver Propagation Delays and Noise Rejection (Note 4) www.national.com 6 |
类似零件编号 - DS14C232CN |
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类似说明 - DS14C232CN |
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