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TL16C450N Datasheet(PDF) 5 Page - Texas Instruments |
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TL16C450N Datasheet(HTML) 5 Page - Texas Instruments |
5 / 27 page TL16C450 ASYNCHRONOUS COMMUNICATIONS ELEMENT SLLS037C − MARCH 1988 − REVISED JANUARY 2006 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Terminal Functions (continued) TERMINAL I/O DESCRIPTION NAME NO.† I/O DESCRIPTION OUT1 OUT2 38 35 O Outputs 1 and 2. OUT1 and OUT2 are user-designated output terminals that are set to their active states by setting their respective modem control register bits (OUT1 and OUT2) high. OUT1 and OUT2 are set to their inactive (high) states as a result of master reset or during loop mode operations or by clearing bit 2 (OUT1) or bit 3 (OUT2) of the MCR. RCLK 10 I Receiver clock. RCLK is the 16 × baud rate clock for the receiver section of the ACE. RI 43 I Ring indicator. RI is a modem status signal. Its condition can be checked by reading bit 6 (RI) of the modem status register. Bit 2 (TERI) of the modem status register indicates that the RI input has transitioned from a low to a high state since the last read from the modem status register. If the modem status interrupt is enabled when this transition occurs, an interrupt is generated. RTS 36 O Request to send. When active, RTS informs the modem or data set that the ACE is ready to transmit data. RTS is set to its active state by setting the RTS modem control register bit and is set to its inactive (high) state either as a result of a master reset or during loop mode operations or by clearing bit 1 (RTS) of the MCR. SIN 11 I Serial input. SIN is the serial data input from a connected communications device. SOUT 13 O Serial output. SOUT is the composite serial data output to a connected communication device. SOUT is set to the marking (set) state as a result of MR. VCC 44 5-V supply voltage VSS 22 Supply common XTAL1 XTAL2 18 19 I/O External clock. XTAL1 and XTAL2 connect the ACE to the main timing reference (clock or crystal). † Terminal numbers shown are for the FN package. absolute maximum ratings over free-air temperature range (unless otherwise noted)† Supply voltage range, VCC (see Note 1) −0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range at any input, VI −0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output voltage range, VO −0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous total power dissipation at (or below) 70 °C free-air temperature: FN package 1100 mW . . . . . . . N package‡ 800 mW . . . . . . . . Operating free-air temperature range, TA 0 °C to 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg −65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Case temperature for 10 seconds, TC: FN package 260 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: N package‡ 260 °C . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. ‡ The N package in Not Recommended for New Designs. NOTE 1: All voltage values are with respect to VSS. recommended operating conditions MIN NOM MAX UNIT Supply voltage, VCC 4.75 5 5.25 V High-level input voltage, VIH 2 VCC V Low-level input voltage, VIL − 0.5 0.8 V Operating free-air temperature, TA 0 70 °C |
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