MNDS7820A NSC

Document overview

  • Manufacturer or author: Provided By www.digicamel.com(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 9

Technical content

Original Creation Date: 01/18/96 Last Update Date: 09/08/99 Last Major Revision Date: MNDS7820A-X REV 0A0 MICROCIRCUIT DATA SHEET DUAL LINE RECEIVER General Description The DS7820A is a improved performance digital line receiver with two completely independent units fabricated on a single silicon chip. Intended for use with digital systems connected by twisted pair lines, it has a differential input designed to reject large common mode signals while responding to small differential signals. The output is directly compatible with TTL or LS integrated circuits. The response time can be controlled with an external capacitor to eliminate noise spikes, and the output state is determined for open inputs. Termination resistors for the twisted pair line are also included in the circuit. The DS7820 is specified, worst case, over it's full operating temperature range, for + 10-percent supply voltage variations and over the entire input voltage range. NS Part Numbers DS7820AJ/883 DS7820AW-MLS Industry Part Number DS7820A Prime Die DS7820 Processing MIL-STD-883, Method 5004 Quality Conformance Inspection MIL-STD-883, Method 5005 Subgrp Description Temp ( C)o

1 Static tests at +25

2 Static tests at +125

3 Static tests at -55

4 Dynamic tests at +25

5 Dynamic tests at +125

6 Dynamic tests at -55

7 Functional tests at +25

8A Functional tests at +125 8B Functional tests at -55

9 Switching tests at +25

10 Switching tests at +125

11 Switching tests at -55

MICROCIRCUIT DATA SHEETMNDS7820A-X REV 0A0

Features

  • Operation from a single + 5V logic supply - Input voltage range of +15V - Strobe low forces output to "1" state - High input resistance - Fanout of ten with TTL integrated circuits - Outputs can be wire OR'ed - Series 54/74 compatible

MICROCIRCUIT DATA SHEETMNDS7820A-X REV 0A0 (Absolute Maximum Ratings) (Note 1) Supply Voltage 8.0V Common-Mode Voltage + 20V Differential Input Voltage + 20V Strobe Voltage 8.0V Output Sink Current 50 mA Storage Temperature Range -65 C to +150 C Lead Temperature

260 C(Soldering, 4 seconds)

Note 1: "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. Except for "Operating Temperature Range" they are not meant to imply that the devices should be operated at these limits. The table of "Electrical Characteristics" provides conditions for actual device operation. Recommended Operating Conditions Supply Voltage (Vcc) 4.5V to 5.5V Temperature (TA) -55 C to +125 C

MNDS7820A-X REV 0A0 MICROCIRCUIT DATA SHEET

Electrical Characteristics

(The following conditions apply to all the following parameters, unless otherwise specified.) DC: Vcc = 5V SYMBOL PARAMETER CONDITIONS NOTES PIN- NAMEMIN MAX UNITSUB- GROUPS Voh Logical "1" Output Voltage Vcc=4.5V, In-=0V, In+=1V, Strobe=4.5V, Iout=-400uA 2.5 5.5 V 1, 2, Vol Logical "0" Output Voltage Vcc=4.5V, In-=1V, In+=0V, Strobe=4.5V, Iout=16mA

0.4 V 1, 2,

Iil (str) Strobe Input Current Vcc=5.5V, In-=3V, In+=0V, Strobe=0.4V -1.4 mA 1, 2, Iih (str) Strobe Input Current Vcc=4.5V, In-=0V, In+=+3V, Strobe=5.5V 5 uA 1, 2, Iin+ Non-Inverting Input Current Vcc=4.5V, In-=15V, In+=15V, Strobe=0V 7 mA 1, 2, Vcc=5.5V, In-=0V, In+=0V, Strobe=0V -1.6 mA 1, 2, Vcc=5.5V, In-=-15V, In+=-15V, Strobe=0V -9.8 mA 1, 2, Iin- Inverting Input Current Vcc=4.5V, In-=15V, In+=15V, Strobe=0V 4.2 mA 1, 2, Vcc=5.5V, In-=0V, In+=0V, Strobe=5.5V -0.5 mA 1, 2, Vcc=5.5V, In-=-15V, In+=-15V, Strobe=5.5V -4.2 mA 1, 2, Ios Short Circuit Current Vcc=5.5V, In-=0V, In+=3V, Strobe=0V, Vout=0V Icc Power Supply Current (Total of Both Receivers) Vcc=5.5V, In-=15.5V, In+=14.5V, Strobe=5V 12 mA 1, 2, Vcc=5.5V, In-=-14.5V, In+=-15.5V, Strobe=5V 28 mA 1, 2, Vcc=5.5V, In-=0.5V, In+=0V, Strobe=5V 20.4 mA 1, 2, Rterm Line Termination Resistance Vcc=5V, In+= 0V, Iterm=1mA, (1mV=1 Ohm) 120 250 Ohm 1, 2, Rin+ Non-Inverting Input Resistance Vcc=5V, 1mA < Iin+ < 2mA, Iin-=0V1.8 KOhm 1, 2, Rin- Inverting Input Resistance Vcc=5V, 1mA < Iin- < 2mA, Iin+=0V3.6 KOhm 1, 2, Vsh Strobe Input Voltage Vcc=5.5V, Iout=+16mA, Vout <0.4V1 2.1 V 1, 2, Vsl Strobe Input Voltage Vcc=5.5V, Iout =-400uA, Vout > 2.5V1 0.9 V 1, 2,

MNDS7820A-X REV 0A0 MICROCIRCUIT DATA SHEET DC PARAMETER(Continued) (The following conditions apply to all the following parameters, unless otherwise specified.) DC: Vcc = 5V SYMBOL PARAMETER CONDITIONS NOTES PIN- NAMEMIN MAX UNITSUB- GROUPS Vth Differential Threshold Voltage Vcm=+3V, Vout > 2.5V, Iout = -400uA1 0.5 V 1, 2, Vcm=+3V, Vout < 0.4V, Iout = 16mA1 -0.5 V 1, 2, Vcm=+15V, Vout > 2.5V, Iout = -400uA1 1 V 1, 2, Vcm=+15V, Vout < 0.4V, Iout = 16mA1 -1 V 1, 2, AC Parameters: PROPAGATION DELAY (The following conditions apply to all the following parameters, unless otherwise specified.) AC: Vcc = 5V tPHL From Differential Input 45 nS 9 tPLH From Differential Input 40 nS 9 tPHL From Strobe Input 25 nS 9 tPLH From Strobe Input 30 nS 9 Note 1: Parameter tested go-no-go only. Note 2: Only one output at a time should be shorted.

MICROCIRCUIT DATA SHEETMNDS7820A-X REV 0A0 Graphics and Diagrams GRAPHICS# DESCRIPTION J14ARH CERDIP (J), 14 LEAD (P/P DWG) W14BRN CERPACK (W), 14 LEAD (P/P DWG) See attached graphics following this page.

MICROCIRCUIT DATA SHEETMNDS7820A-X REV 0A0

Revision History

Rev ECN # Rel Date Originator Changes 0A0 M0003549 09/08/99 Rose Malone Initial MDS Release. Conversion from RETS to MDS. Obsolete RETS7820AX, Rev. 3E replaced by MNDS7820A-X, Rev. 0A0.