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Part: 5962-8961501HA
Category:
Interface and Interconnect
-> RS-485
Description: DS16F95 - EIA-485/EIA-422A Differential Bus Transceivers, Package: Lcc, Pin Nb=20
Company: National Semiconductor Corporation
Datasheet: Download 5962-8961501HA datasheet File size : 354 kB
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Datasheet text preview:
DS16F95, DS36F95 EIA-485/EIA-422A Differential Bus Transceiver
June 1998
DS16F95, DS36F95 EIA-485/EIA-422A Differential Bus Transceiver
General Description
The DS16F95/DS36F95 Differential Bus Transceiver is a monolithic integrated circuit designed for bidirectional data communication on balanced multipoint bus transmission lines. The transceiver meets both EIA-485 and EIA-422A standards. The DS16F95/DS36F95 offers improved performance due to the use of L-FAST bipolar technology. The L-FAST technology allows for higher speeds and lower currents by minimizing gate delay times. Thus, the DS16F95 and DS36F95 consume less power, and feature an extended temperature range as well as improved specifications. The DS16F95/DS36F95 combines a TRI-STATE ® differential line driver and a differential input line receiver, both of which operate from a single 5.0V power supply. The driver and receiver have an active Enable that can be externally connected to function as a direction control. The driver differential outputs and the receiver differential inputs are internally connected to form differential input/output (I/O) bus ports that are designed to offer minimum loading to the bus whenever the driver is disabled or when VCC = 0V. These ports feature wide positive and negative common mode voltage ranges, making the device suitable for multipoint applications in noisy environments. The driver is designed to accommodate loads of up to 60 mA of sink or source current and features positive and negative current limiting in addition to thermal shutdown for protection from line fault conditions. The DS16F95/DS36F95 can be used in transmission line applications employing the DS96F172 and the DS96F174 quad differential line drivers and the DS96F173 and DS96F175 quad differential line receivers.
Features
n n n n n n n n n n n n n n n Meets EIA-485 and EIA-422A Meets SCSI-1 (5 MHZ) specifications Designed for multipoint transmission Wide positive and negative input/output bus voltage ranges Thermal shutdown protection Driver positive and negative current-limiting High impedance receiver input Receiver input hysteresis of 50 mV typical Operates from single 5.0V supply Reduced power consumption Pin compatible with DS3695 and SN75176A Military temperature range available Qualified for MIL-STD 883C Standard Military Drawings (SMD) available Available in DIP (J), SOIC (M), LCC (E), and Flatpak (W) packages
Logic Diagram
Function Tables Driver
Driver Input DI H L X Enable DE H H L A H L Z Outputs B L H Z
DS009629-20
Receiver
Differential Inputs A B VID 0.2V VID -0.2V X
H = High Level L = Low Level X = Immaterial Z = High Impedance (Off)
Enable RE L L H
Output RO H L Z
TRI-STATE ® is a registered trademark of National Semiconductor Corporation.
© 1998 National Semiconductor Corporation
DS009629
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COMMERCIAL Absolute Maximum Ratings (Note 2)
Specifications for the 883 version of this product are listed separately on the following pages. Storage Temperature Range -65°C to +175°C Lead Temperature (Soldering, 60 sec.) 300°C Maximum Package Power Dissipation (Note 1) at 25°C 'J' Package 1300 mW 'M' Package 735 mW Supply Voltage 7.0V Input Voltage (Bus Terminal) +15V/-10V Enable Input Voltage 5.5V
Recommended Operating Conditions
Min Supply Voltage (VCC) DS36F95 4.75 DS16F95 4.50 Voltage at Any Bus Terminal (Separately or Common Mode) -7.0 (VI or VCM) Differential Input Voltage (VID) Output Current HIGH (IOH) Driver Receiver Output Current LOW (IOL) Driver Receiver Operating Temperature (TA) DS36F95 0 DS16F95 -55
Derate 'M' package 5.88 mW/°C above 25°C.
Typ 5.0 5.0
Max 5.25 5.50
Units V V
+12
± 12
V V
-60 -400 60 16 +25 +25 +70 +125
mA µA mA mA °C °C
Note 1: Derate 'J' package 8.7 mW/°C above 25°C.
Driver Electrical Characteristics (Notes 3, 4)
Over recommended supply voltage and operating temperature ranges, unless otherwise specified Symbol VIH VIL VOH VOL VIC |VOD1| |VOD2| |VOD| Parameter Input Voltage HIGH Input Voltage LOW Output Voltage HIGH Output Voltage LOW Input Clamp Voltage Differential Output Voltage Differential Output Voltage Change in Magnitude of Differential Output Voltage (Note 5) VOC |VOC| Common Mode Output Voltage (Note 6) Change in Magnitude of Common Mode Output Voltage (Note 5) Output Current (Note 9) (Includes Receiver II) IIH IIL IOS Input Current HIGH Input Current LOW Short Circuit Output Current (Note 10) VI = 2.4V VI = 0.4V VO = -7.0V VO = 0V VO = VCC VO = +12V Output Disabled VO = +12V VO = -7.0V 3.0 V IOH = -55 mA IOL = 55 mA II = -18 mA IO = 0 mA RL = 100, Figure 1 RL = 54, Figure 1 RL = 54 or 100, -40°C to +125°C -55°C to +125°C 2.0 1.5 2.25 2.0 0°C to +70°C 0°C to +70°C 3.0 2.0 -1.3 6.0 Conditions Min 2.0 0.8 Typ Max Units V V V V V V V
Figure 1
± 0.2 ± 0.4
V
± 0.2
1.0 -0.8 20 -50 -250 -150 150 250
V mA µA µA
IO
mA
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Driver Electrical Characteristics (Notes 3, 4)
Symbol ICC ICCX Parameter Supply Current (Total Package) No Load, All Inputs Open
(Continued)
Over recommended supply voltage and operating temperature ranges, unless otherwise specified Conditions DE = 2V, RE = 0.8V Outputs Enabled DE = 0.8V, RE = 2V Outputs Disabled 25 Min Typ Max 28 mA Units
COMMERCIAL Driver Switching Characteristics
VCC = 5.0V, TA = 25°C Symbol tDD tTD tPLH tPHL tZH tZL tHZ tLZ tLZL tSKEW Parameter Differential Output Delay Time Differential Output Transition Time Propagation Delay Time, Low-to-High Level Output Propagation Delay Time, High-to-Low Level Output Output Enable Time to High Level Output Enable Time to Low Level Output Disable Time from High Level Output Disable Time from Low Level Output Disable Time from Low Level with Load Resistor to GND Skew (Pulse Width Distortion) RL = 110, Figure 5 RL = 110, Figure 6 RL = 110, Figure 5 RL = 110, Figure 6 Load per Figure 5 Timing per Figure 6 RL = 60, Figure 3 1.0 4.0 ns 25 25 20 20 300 32 32 25 25 ns ns ns ns ns 6.0 12 16 ns RL = 27, Figure 4 Conditions RL = 60, Figure 3 Min 8.0 8.0 6.0 Typ 15 15 12 Max 20 22 16 Units ns ns ns
Receiver Electrical Characteristics
Over recommended supply voltage and operating temperature ranges, unless otherwise specified Symbol VTH VTL VT+-VT- VIH VIL VIC VOH Parameter Differential Input High Threshold Voltage Differential Input Low Threshold Voltage (Note 7) Hysteresis (Note 8) Enable Input Voltage HIGH Enable Input Voltage LOW Enable Input Clamp Voltage Output Voltage HIGH II = -18 mA VID = 200 mV, IOH = -400 µA, 0°C to +70°C -55°C to +125°C IOL = 8.0 mA IOL = 16 mA VI = +12V VI = -7.0V IIH IIL RI IOS Enable Input Current HIGH Enable Input Current LOW Input Resistance Short Circuit Output Current (Note 9) VIH = 2.7V VIL = 0.4V 14 -15 18 2.8 2.5 0.45 0.50 V µA mA µA µA k mA VCM = 0V 35 2.0 0.8 -1.3 50 mV V V V V VO = 0.5V, IO = 8.0 mA -0.2 V Conditions VO = 2.7V, IO = -0.4 mA Min Typ Max 0.2 Units V
Figure 2
VOL IOZ II Output Voltage LOW High Impedance State Output Line Input Current (Note 9) VID = -200 mV,
Figure 2
VO = 0.4V to 2.4V Other Input = 0V
± 20
1.0 0.8 20 -50 22 -85
3
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Receiver Electrical Characteristics
Symbol ICC ICCX Parameter Supply Current (Total Package) No Load,
(Continued)
Over recommended supply voltage and operating temperature ranges, unless otherwise specified Conditions DE = 2V, RE = 0.8V Outputs Enabled DE = 0.8V, RE = 2V Outputs Disabled 25 All Inputs Open Min Typ Max 28 mA Units
COMMERCIAL Receiver Switching Characteristics
VCC = 5.0V, TA = 25°C Symbol tPLH tPHL tZH tZL tHZ tLZ |tPLH-tPHL| Parameter Propagation Delay Time, Low-to-High Level Output Propagation Delay Time, High-to-Low Level Output Output Enable Time to High Level Output Enable Time to Low Level Output Disable Time from High Level Output Disable Time from Low Level Pulse Width Distortion (SKEW) CL = 5.0 pF, Figure 8 CL = 15 pF, Figure 8 10 12 12 12 1.0 16 18 20 18 4.0 ns ns ns ns ns Conditions VID = 0V to +3.0V CL = 15 pF, Figure 7 14 19 24 ns Min 14 Typ 19 Max 24 Units ns
Figure 7
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 tables of "Electrical Characteristics" provide conditions for actual device operation. Note 3: Unless otherwise specified min/max limits apply across the -55°C to +125°C temperature range for the DS16F95 and across the 0°C to +70°C range for the DS36F95. All typicals are given for VCC = 5V and TA = 25°C. Note 4: All currents into the device pins are positive; all currents out of the device pins are negative. All voltages are referenced to ground unless otherwise specified. Note 5: |VOD| and |VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to a low level. Note 6: In TIA/EIA-422A and TIA/EIA-485 Standards, VOC, which is the average of the two output voltages with respect to ground, is called output offset voltage, VOS. Note 7: The algebraic convention, where the less positive (more negative) limit is designated minimum, is used in this data sheet for common mode input voltage and threshold voltage levels only. Note 8: Hysteresis is the difference between the positive-going input threshold voltage, VT+, and the negative-going input threshold voltage, VT-. Note 9: Refer to TIA/EIA-485 Standard for exact conditions. Note 10: Only one output at a time should be shorted.
Order Number:
DS16F95J, NS Package Number J08A DS36F95J, NS Package Number J08A DS36F95M, NS Package Number M08A
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MIL-STD 883C Absolute Maximum Ratings (Note 2)
For complete Military Product Specifications, refer to the appropriate SMD or MDS. Storage Temperature Range -65°C to +175°C Lead Temperature (Soldering, 60 sec.) 300°C Maximum Power Dissipation (Note 11) at 25°C Ceramic 'E' Package 1800 mW Ceramic 'J' Package 1300 mW Ceramic 'W' Package TBD Supply Voltage 7.0V Input Voltage (Bus Terminal) +15V/-10V Enable Input Voltage 5.5V
Recommended Operating Conditions
Min Supply Voltage (VCC) DS16F95 Voltage at Any Bus Terminal (Separately or Common Mode) (VI or VCM) Differential Input Voltage (VID) Output Current HIGH (IOH) Driver Receiver Output Current LOW (IOL) Driver Receiver Operating Temperature (TA) DS16F95 4.50 Max 5.50 Units V
-7.0
+12
± 12
V V
-60 -400 60 16 -55 +125
mA µA mA mA °C
Note 11: Above TA = 25°C, derate E package, J package 8.7 mW/°C, W package 125 mW/°C.
Driver Electrical Characteristics (Notes 3, 4)
Over recommended supply voltage and operating temperature ranges, unless otherwise specified Symbol VIH VIL VOH VOL VIC |VOD1| |VOD2| |VOD| Parameter Input Voltage HIGH Input Voltage LOW Output Voltage HIGH Output Voltage LOW Input Clamp Voltage Differential Output Voltage Differential Output Voltage Change in Magnitude of Differential Output Voltage (Note 5) VOD3 VOC |VOC| Differential Output Voltage Common Mode Output Voltage (Note 6) Change in Magnitude of Common Mode Output Voltage (Note 5) IO IIH IIL IOS Output Current (Note 9) (Includes Receiver II) Input Current HIGH Input Current LOW Short Circuit Output Current (Note 10) Output Disabled VCC = 0V or 5.5V VI = 2.4V VI = 0.4V VO = -7.0V, VIN = 0V or 3V VO = 0V, VIN = 0V or 3V VO = VCC, VIN = 0V or 3V VO = +12V, VIN = 0V or 3V ICC ICCX Supply Current (Total Package) No Load, DE = 2V, RE = 0.8V, Inputs Open No Load, DE = 0.8V, RE = 2V, Inputs Open VO = +12V VO = -7.0V 1.0 -0.8 20 -50 -250 -150 150 250 28 25 mA mA µA µA mA VCC = 4.5V, RL = 54 or 100 VCM = -7V to +12V RL = 54 or 100 1.0 3.0 V V VCC = 5.5V VCC = 5.5V IOH = -20 mA, VCC = 4.5V IOL = +20 mA, VCC = 4.5V II = -18 mA IO = 0 mA, VIN = 0.8V or 2V, VCC = 5.5V RL = 100, VCC = 4.5V, Figure 1 RL = 54, VCC = 4.5V, Figure 1 RL = 54 or 100, Figure 1, VCC = 4.5V 2.0 1.5 3.0 2.0 -1.3 6.0 Conditions Min 2.0 0.8 Max Units V V V V V V V
± 0.2
V
± 0.2
V
5
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