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LTM2882IV-3PBF Datasheet(PDF) 9 Page - Linear Technology |
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LTM2882IV-3PBF Datasheet(HTML) 9 Page - Linear Technology |
9 / 16 page LTM2882 9 2882p LOGIC SIDE R2OUT (Pin A1): Channel 2 RS232 Inverting Receiver Output. Controlled through isolation barrier from receiver input R2IN. Under the condition of an isolation communi- cation failure R2OUT is in a high impedance state. T2IN (Pin A2): Channel 2 RS232 Inverting Driver Input. A logic low on this input generates a high on isolated output T2OUT. A logic high on this input generates a low on isolated output T2OUT. Do not float. R1OUT (Pin A3): Channel 1 RS232 Inverting Receiver Output. Controlled through isolation barrier from receiver input R1IN. Under the condition of an isolation communi- cation failure R1OUT is in a high impedance state. T1IN (Pin A4): Channel 1 RS232 Inverting Driver Input. A logic low on this input generates a high on isolated output T1OUT. A logic high on this input generates a low on isolated output T1OUT. Do not float. DIN (Pin A5): General Purpose Non-Inverting Logic Input. A logic high on DIN generates a logic high on isolated output DOUT. A logic low on DIN generates a logic low on isolated output DOUT. Do not float. ON (Pin A6): Enable. Enables power and data communica- tion through the isolation barrier. If ON is high the part is enabled and power and communications are functional to the isolated side. If ON is low the logic side is held in reset and the isolated side is unpowered. Do not float. VL (Pin A7): Logic Supply. Interface supply voltage for pins DIN, R2OUT, T2IN, R1OUT, T1IN, and ON. Operating voltage is 1.62V to 5.5V. VCC (Pins A8, B7-B8): Supply Voltage. Operating volt- age is 3.0V to 3.6V for LTM2882-3, and 4.5V to 5.5V for LTM2882-5. GND (Pins B1-B6): Circuit Ground. ISOLATED SIDE GND2 (Pins K1-K7): Isolated Side Circuit Ground. These pads should be connected to the isolated ground and/or cable shield. VCC2 (Pins K8, L7-L8): Isolated Supply Voltage Output. Internally generated from VCC by an isolated DC/DC con- verter and regulated to 5V. Supply voltage for pins R1IN, R2IN, DE, and DOUT. R2IN (Pin L1): Channel 2 RS232 Inverting Receiver Input. A low on isolated input R2IN generates a logic high on R2OUT. A high on isolated input R2IN generates a logic low on R2OUT. Impedance is nominally 5kΩ in receive mode or unpowered. T2OUT (Pin L2): Channel 2 RS232 Inverting Driver Output. Controlled through isolation barrier from driver input T2IN. High impedance when the driver is disabled (DE pin is low). R1IN (Pin L3): Channel 1 RS232 Inverting Receiver Input. A low on isolated input R1IN generates a logic high on R1OUT. A high on isolated input R1IN generates a logic low on R1OUT. Impedance is nominally 5kΩ in receive mode or unpowered. T1OUT (Pin L4): Channel 1 RS232 Inverting Driver Output. Controlled through isolation barrier from driver input T1IN. High impedance when the driver is disabled (DE pin is low). DOUT (Pin L5): General Purpose Non-Inverting Logic Output. Logic output connected through isolation barrier to DIN. DE (Pin L6): Driver Output Enable. A low input forces both RS232 driver outputs, T1OUTand T2OUT, into a high impedance state. A high input enables both RS232 driver outputs. Do not float. PIN FUNCTIONS |
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