Details, datasheet, quote on part number: DS89C387TMEA
PartDS89C387TMEA
CategoryInterface and Interconnect => RS-422/RS-423
DescriptionDS89C387 - Twelve Channel CMOS Differential Line Driver, Package: SSOP-EIAJ, Pin Nb=48
CompanyNational Semiconductor Corporation
DatasheetDownload DS89C387TMEA datasheet
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Features, Applications
DS89C387 Twelve Channel CMOS Differential Line Driver

The is a high speed twelve channel CMOS differential driver that meets the requirements of TIA/ EIA-422-B. The DS89C387 features a low ICC specification 1.5 mA maximum, which makes it ideal for battery powered and power conscious applications. The device replaces three DS34C87s and offers a PC board space savings to 30%. The twelve channel driver is available in a SSOP package. The device is ideal for wide parallel bus applications. Each TRI-STATE ® enable (EN) allows the driver outputs to be active in a HI-impedance off state. Each enable is common to only two drivers for flexibility and control. The drivers may be disabled to turn off load current and to save power when data is not being transmitted. The driver's input (DI) is compatible with both TTL and CMOS signal levels.

Features

n Low power ICC: 1.5 mA maximum n Meets (RS-422) n Guaranteed AC parameters: Maximum driver skew -3 ns Maximum transition time ns n Available in SSOP packaging: Requires 30% less PCB space than 3 DS34C87TMs

TRI-STATE is a registered trademark of National Semiconductor Corporation.

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (VCC) -1.5 to VCC +1.5V DC Voltage (VIN) 7V DC Output Voltage (VOUT) 20 mA Clamp Diode Current (IIK, IOK) mA DC Output Current, per pin (IOUT) mA DC VCC or GND Current (ICC) to +150°C Storage Temperature Range (TSTG) Maximum Power Dissipation (PD) @ 25°C (Note 3) SSOP Package 1359 mW

Lead Temperature (TL) (Soldering 4 sec.) 260°C This device does not meet 2000V ESD rating. (Note 11)

Supply Voltage (VCC) DC Input or Output Voltage (VIN, VOUT) Operating Temperature Range (TA) DS89C387T Input Rise or Fall Times (tr, tf) Min 0 -40 Max 5.50 VCC +85 500 Units °C ns

VCC ± 10% (unless otherwise specified) Symbol VIH VIL VOH VOL VT |VT|­|VT| VOS |VOS­VOS| IIN ICC Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage Differential Output Voltage Difference In Differential Output Common Mode Output Voltage Difference In Common Mode Output Input Current Quiescent Supply Current IOZ ISC IOFF TRI-STATE Output Leakage Current Output Short Circuit Current Power Off Output Leakage Current VIN = VIH or VIL, IOUT -20 mA VIN = VIH or VIL, IOUT = 100 (Note = 100 (Note = 100 (Note = 100 (Note 5) VIN = VCC, GND, VIH, or VIL IOUT = 0 µA, VIN = VCC or GND VIN or 0.5V (Note 6) VOUT = VCC or GND Control = VIL VIN = VCC or GND (Notes 5, 7) VCC = 0V (Note 5) VOUT = 6V VOUT 3.4 V GND 0.8 V Conditions Min 2.0 Typ Max VCC Units V

Note 1: Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device should be operated at these limits. The table of "Electrical Characteristics" provide conditions for actual device operation. Note 2: Unless otherwise specified, all voltages are referenced to ground. All currents into device pins are positive; all currents out of device pins are negative. Note 3: Ratings apply to ambient temperature at 25°C. Above this temperature derate SSOP (MEA) Package 10.9 mW/°C. Note 4: Unless otherwise specified, min/max limits apply across the to 85°C temperature range. All typicals are given for VCC = 5V and = 25°C. Note 5: See TIA/EIA-422-B for exact test conditions. Note 6: Measured per input. All other inputs at VCC or GND. Note 7: This is the current sourced when a high output is shorted to ground. Only one output at a time should be shorted.

Symbol tPLH, tPHL Skew tTLH, tTHL tPZH tPZL tPHZ tPLZ CPD CIN Parameter Propagation Delay Input to Output (Note 8) Differential Output Rise And Fall Times Output Enable Time Output Enable Time Output Disable Time (Note 9) Output Disable Time (Note 9) Power Dissipation Capacitance (Note 10) Input Capacitance 6 pF

Note 8: Skew is defined as the difference in propagation delays between complementary outputs at the crossing point. Note 9: Output disable time is the delay from the control input being switched to the output transistors turning off. The actual disable times are less than indicated due to the delay added by the RC time constant of the load. Note 10: CPD determines the no load dynamic power consumption, PD = CPD f + ICC VCC, and the no load dynamic current consumption, IS = CPD VCC f + ICC. Note 11: ESD Rating: HBM k, 100 pF) Inputs 1500V Outputs 1000V EIAJ (0, 200 pF) All Pins 350V

Conditions S1 Open S1 Open S1 Open S1 Closed S1 Closed S1 Closed S1 Closed

 

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