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DS36C278 Datasheet(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. DS36C278
Description  Low Power Multipoint EIA-RS-485 Transceiver
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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DS36C278 Datasheet(HTML) 4 Page - National Semiconductor (TI)

 
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Switching Characteristics (Notes 4, 9) (Continued)
Note 2: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices
should be operated at these limits. The table of “Electrical Characteristics” specifies conditions of device operation.
Note 3: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground except VOD1 and
VOD2.
Note 4: All typicals are given for: VCC = +5.0V, TA = + 25˚C.
Note 5: Delta |VOD2| and Delta |VOC| are changes in magnitude of VOD2 and VOC, respectively, that occur when input changes state.
Note 6: Threshold parameter limits specified as an algebraic value rather than by magnitude.
Note 7: Hysteresis defined as VHST =VTH −VTL.
Note 8: IIN includes the receiver input current and driver TRI-STATE leakage current.
Note 9: CL includes probe and jig capacitance.
Note 10: For complete details of test, see RS-485.
Parameter Measurement Information
01204002
FIGURE 1. Driver V
OD2 and VOC
01204018
FIGURE 2. Driver V
OD3
01204003
FIGURE 3. Driver V
OH and VOL
01204004
Vtest = −7V to +12V
FIGURE 4. Driver I
OSD
01204005
FIGURE 5. Driver Differential Propagation Delay Test
Circuit
01204006
FIGURE 6. Driver Differential Propagation Delays and
Differential Rise and Fall Times
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