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Part: ISO518P
Category:
Analog & Mixed-Signal Processing
-> Amplifiers
-> Isolation Amplifiers
Description: ti ISO518, Bidirectional ISOlated Digital Couplers
Company: Texas Instruments, Inc.
Datasheet: Download ISO518P datasheet File size : 1158 kB
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Datasheet text preview:
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ISO
518
ISO518
ISO
518
For most current data sheet and other product information, visit www.burr-brown.com
Bidirectional ISOLATED DIGITAL COUPLERS
FEATURES
q LOW POWER CONSUMPTION: < 12mW per Channel q 1500Vrms ISOLATION: 100% Tested by Partial Discharge q DOUBLE BUFFERED DESIGN FOR EASY INTEGRATION INTO BUS-BASED SYSTEMS q TRI-STATE OUTPUTS q 24-PIN PDIP OR GULL WING PACKAGES q 2MWORDS /S TRANSFER RATE
DESCRIPTION
The ISO518 is an 8-channel, isolated, bidirectional digital coupler based on the Burr-Brown capacitive barrier technology. The ISO518 is designed with input and output buffers for ease of integration into a µP bus system. All data pins are I/O under the control of the TX pins. Input and output buffers are controlled by the latch enable pins. This feature of the ISO518, which allows multiple access to a data bus, requires extra circuitry when using an alternative solution. The ISO518 will transfer an 8-bit word at rates up to 2Mwords/s without the skew problems associated in implementing this function with optocouplers. The ISO518 is available in 24-pin PDIP or 24-pin Gull Wing packages. Both are specified for operation from 40°C to +85°C.
APPLICATIONS
q PARALLEL ADCs/DACs q DIGITAL INTERFACES q DIGITAL TRANSMISSION q GROUND-LOOP ISOLATION
L A DATA I/O T C H
L A T C H
S H I F T
S H I F T
L A T C H
L A T C H DATA I/O
LEA TXA/RXA
LEB TXB/RXB
ISO518 Functional Block Diagram
International Airport Industrial Park · Mailing Address: PO Box 11400, Tucson, AZ 85734 · Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 · Tel: (520) 746-1111 Twx: 910-952-1111 · Internet: http://www.burr-brown.com/ · Cable: BBRCORP · Telex: 066-6491 · FAX: (520) 889-1510 · Immediate Product Info: (800) 548-6132
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©
1998 Burr-Brown Corporation
PDS-1423B
ri ted in U.S.A. IPSnO518 June, 1999
SBOS081
SPECIFICATIONS
At TA = +25°C, and VS = +5V, unless otherwise noted. ISO518P, P-U PARAMETER ISOLATION Rated Voltage, Continuous Partial Discharge Voltage Barrier Impedance Leakage Current Creepage Distance Internal Isolation Distance Transient Recovery Time DC CHARACTERISTICS High Level Input Voltage Low Level Input Voltage Input Leakage Current Input Capacitance High Level Output Voltage Low Level Output Voltage Output Short-Circuit Current TIMING LE Width (LOW) LE Width (HIGH) Data Set-Up to LEA/B Data Hold from LEA/B Propagation Delay Data Output Delay Output Rise and Fall Time Output Enable Output Disable Max Data Transfer Rate Skew POWER Supply Voltage Supply Current Supply Current TEMPERATURE RANGE Operating Storage Thermal Resistance, JA VIH VIL IL CIN VOH VOL I OS tWL tWH t SU tH t PD tOD tRF t EN tDIS CONDITIONS MIN TYP MAX UNITS
VISO
50Hz, 60Hz 1s, 5 x 5pC/cycle(1) 240V, 60Hz 2500V, 50Hz PDIP = "P" and "U" Package PDIP = "P" and "U" Package 5kV/µs Edge See Note 2 See Note 2
1500 2500 >1014 || 10 1 12 11 0.1 1 2 0.8 5 5
Vrms Vrms /pF µA µA mm mm µs V V nA pF V V mA ns ns ns ns ns ns ns ns ns Mw/s ns V mA mA mA mA °C °C °C/W
IOH = 6mA I OL = 6mA IS, max
VS 1 0.4 30 100 15 0 20 520 35 14 35 35
LEA/B HIGH to LOW LEA/B HIGH to LOW LEA/B LOW to Data Out LEO HIGH to Data Out Channels 10% to 90% Load = 50pF OE to Data Valid HIGH or LOW OE to Data HI-Z Between Any Two Channels
9
2 5 4.5 5 7 8 12 40 40 +75 5.5 10 15 12 20 +85 +125
VSA, VSB ISA / B ISB / A
Either Side Transmit Side DC Transmit Side DC Max Rate Receive Side DC Receive Side Max Rate
NOTES: (1) All devices receive a 1s test. Failure criterion is > 5pC pulses of 5pC per cycle. (2) Logic inputs are HCT-type and thresholds are a function of power supply voltage with approximately 400mV hysteresis.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user's own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems.
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ISO518
2
PIN CONFIGURATION
Top View DIP
FUNCTIONAL DESCRIPTION
NAME DA (0 - 7) FUNCTION Data Bus A. The logic levels on these pins are transmitted to, or received from the corresponding pins on data bus B. Data Bus B. The logic levels on these pins are transmitted to, or received from the corresponding pins on data bus A. Latch Enable A. Latch enable signal for the A data buffer. Latch Enable B. Latch enable signal for the B data buffer. Transmit/Receive Control for Side A. Transmit/Receive Control for Side B.
VSA TXA/RXA DA0 DA1 DA2 DA3 DA4 DA5 DA6
1 2 3 4 5 6 7 8 9 ISO518
24 23 22 21 20 19 18 17 16 15 14 13
GNDB LEB DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 TXB/RXB VSB
DB (0 -7) LEA (1) LEB(1) TX/RXA(2) TX/RXB(2)
NOTES: (1) In transmit mode (TX/RX = 1), a logic 0 (LOW) will latch the input buffer data into the input register and initialize the transmission. A logic 0 (LOW) will latch the internal buffer data into the output register and prevent any further changes in the output data. A logic 1 (HIGH) will pass the internal buffer data to the output register and permit each new set of data to appear as soon as available after transmission. (2) A logic 1 (HIGH) will set that side to transmit mode and the same side's data bus to input mode. A logic 0 (LOW) will set that side to receive mode and the same side's data bus to output mode.
DA7 10 LEA 11 GNDA 12
ELECTROSTATIC DISCHARGE SENSITIVITY
Electrostatic discharge can cause damage ranging from performance degradation to complete device failure. BurrBrown Corporation recommends that all integrated circuits be handled and stored using appropriate ESD protection methods. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet published specifications.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage: VSA .... 0.5V to +6V VSB .... 0.5V to +6V Maximum Input Current, Any Input ........ 20mA Continuous Isolation Voltage ..... 1500Vr ms Storage Temperature ...... 40°C to +125°C Lead Temperature (soldering, 10s) ....... 300°C
PACKAGE INFORMATION
PRODUCT ISO518P ISO518P-U PACKAGE 24-Pin Plastic DIP 24-Pin Gull Wing Surface Mount PACKAGE DRAWING NUMBER(1) 167 167-4
NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book.
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