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MX27C512PI-120 Datasheet
2.7 nh SMT Coil 4mm SMT Ferrite Bead 220 Q Chip Resistor K1206 2K SMT Potentiometer 10 Q Chip Resistor K1206 1 Q Chip Resistor K1206 .028" Dielectric Thickness, 8r = 4.0, AlliedSignal, G200, 2 0z. copper
MX27C512PI-120 Price

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MX27C512PI-120 on stock
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PIN NAME DESCRIPTION
1 NC No Internal Connection 2 AR Auxiliary DataNoice Relay, Active High Output, TTL/CMOS. The AR signal goes high when ever the modem is in the on-hook state. It can be connected to an extemal relay to switch control of the tele- phone line between the modem and an auxiliary handset when. 3 RXD Received Data, Output, TTL. Serial data output to the host. A logic "High" on RXD represents a "mark" and a logic "Low" represents a "space". 4-8 NC No Internal Connection 9 \DTR Data Terminal Ready,Input, active Low, TTL. The "AT&D" command sets the function of \DTR. The default, AT&D2, requires the host to assert \DTR to permit a modem link. The modem drops the call in progress if \DTR is revoked and will not connect until \DTR is reasserted. 10 NC No Internal Connection 11 YCTS Clear to Send, Output, active Low, TTL/CMOS. YCTS provides the flow control output from the modem when hardware flow control is selected. The modem revokes YCTS when the modem's input buffer is full. The modem reasserts YCTS when the buffer can accept more data without a buffer overflow. 12 NC No Internal Connection 13 TXD Transmit Data, Input, TTL. Serial data input from the host. A logic "High" represents a "mark" and a Low represents a "space", TTL. 14 \RTS Request to Send, input, active Low, TTL. The XE5614L uses \RTS for hardware flow control. When \RTS is revoked; hardware flow control is enabled, and the modem will not place data on RXD. 15 NC No Internal Connection 16 \RI Ring Indicator, Output, active Low, TTL. When low indicates the modem is receiving a ring signal. 18 TIP Tip connection to the phone line (RJ11 pin 3) from the internal DAA. The XE5614L is not sensitive to the battery voltage polarity across Tip and Ring. 20 RING Ring connection to the phone line (RJ11 pin 4) from the intemal DAA. 21 GND Ground (0 volts) 22 AMP Audio Output function is set by L & M commands and the value in register S22. This output can drive a minimum load of 300 0hms. 27-29 N/C No Intemal Connection 30 0H Off-Hook, Output, active High. OH indicates the modem's hookswitch relay is closed. Hookswitch clo- sure connects the modem to the telephone line. This signal is available only on the XE5614L. 31-35 N/C No Intemal Connection 36 RESET Hardware reset pin, Input, active High, TTL. A high on Pin 36 initiates a hardware reset. An extemal reset is not required or recommended. The Reset pulse must be held a mimmum of 100 milliseconds. 37 N/C No Internal Connection 38 \DCD Data Carrier Detect, Output Active Low, TTL/CMOS. The &C command sets the function of \DCD. In the default state \DCD activates when a valid carrier is detected. 39 \DSR Data Set Ready, Output, active Low, TTL/CMOS. &S sets the \DSR function. In the default condition, AT&SO, \DSR is forced true. 40 Vcc +5 Volts