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HIN213ECA-T Datasheet(PDF) 11 Page - Intersil Corporation |
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HIN213ECA-T Datasheet(HTML) 11 Page - Intersil Corporation |
11 / 22 page 11 FN4315.16 November 4, 2005 HIN213E Operation in Shutdown The HIN213E features two receivers, R4 and R5, which remain active in shutdown mode. During normal operation the receivers propagation delay is typically 0.5 µs. This propagation delay may increase slightly during shutdown. When entering shut down mode, receivers R4 and R5 are not valid for 80 µs after SD = VIL. When exiting shutdown mode, all receiver outputs will be invalid until the charge pump circuitry reaches normal operating voltage. This is typically less than 2ms when using 0.1 µF capacitors. Application Information The HIN2XXE may be used for all RS-232 data terminal and communication links. It is particularly useful in applications where ±12V power supplies are not available for conventional RS-232 interface circuits. The applications presented represent typical interface configurations. A simple duplex RS-232 port with CTS/RTS handshaking is illustrated in Figure 7. Fixed output signals such as DTR (data terminal ready) and DSRS (data signaling rate select) is generated by driving them through a 5k Ω resistor connected to V+. In applications requiring four RS-232 inputs and outputs (Figure 8), note that each circuit requires two charge pump capacitors (C1 and C2) but can share common reservoir capacitors (C3 and C4). The benefit of sharing common reservoir capacitors is the elimination of two capacitors and the reduction of the charge pump source impedance which effectively increases the output swing of the transmitters. ROUT GND < VROUT < VCC 5k Ω RXIN -30V < RXIN < +30V GND VCC FIGURE 5. RECEIVER TIN VOL VOL tPLH tPHL AVERAGE PROPAGATION DELAY = tPHL + tPLH 2 OR RIN TOUT OR ROUT FIGURE 6. PROPAGATION DELAY DEFINITION - + - + - + CTR (20) DATA TERMINAL READY DSRS (24) DATA SIGNALING RATE RS-232 INPUTS AND OUTPUTS TD (2) TRANSMIT DATA RTS (4) REQUEST TO SEND RD (3) RECEIVE DATA CTS (5) CLEAR TO SEND SIGNAL GROUND (7) 15 8 13 7 14 16 - + 6 R2 R1 T2 T1 9 12 10 11 4 5 3 1 HIN232E C1 0.1 µF C2 0.1 µF TD RTS RD CTS SELECT +5V INPUTS OUTPUTS TTL/CMOS FIGURE 7. SIMPLE DUPLEX RS-232 PORT WITH CTS/RTS HANDSHAKING HIN202E, HIN206E, HIN207E, HIN208E, HIN211E, HIN213E, HIN232E |
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