ISO7520 Datasheet, PDF (1/15 Pages) Texas Instruments – Low-Power 5 KV(rms) Dual Digital Isolators

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Low-Power 5 KV(rms) Dual Digital Isolators
Check for Samples: ISO7520, ISO7521
ISO7520
ISO7521
SLLSE39 – JUNE 2010
FEATURES
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• Highest Signaling Rate: 1 Mbps
• Propagation Delay Less Than 20 ns
• Low Power Consumption
• Wide Ambient Temperature: –40°C to 105°C
• Safety and Regulatory Approvals
– 5 KV(rms) for 1 minute per UL 1577
– CSA Component Acceptance Notice 5A
– IEC 60747-5-2 (VDE 0884 Rev. 2)
– IEC 60601-1, 60950-1, & 61010-1 End
Equipment Standards
• 50 kV/µs Transient Immunity Typical
• Operates From 3.3V or 5V Supply and Logic
Levels
APPLICATIONS
• Opto-Coupler Replacement in:
– Medical Applications for IEC 60601-1
5KVrms Rated
– Industrial Field-Bus
– ProfiBus
– ModBus
– DeviceNetTM Data Buses
– Servo Control Interface
– Motor Control
– Power Supply
– Battery Packs
The devices have TTL input thresholds and require
two supply voltages, 3.3V or 5V, or any combination.
All inputs are 5-V tolerant when supplied from a 3.3-V
supply.
Note: The ISO7520 and ISO7521 are specified for
signaling rates up to 1 Mbps. Due to their fast
response time, under most cases, these devices will
also transmit data with much shorter pulse widths.
Designers should add external filtering to remove
spurious signals with input pulse duration < 20 ns if
desired.
ISO 7520
GND 1 1
16
NC 2
15
VCC 1 3
14
INA ⁴
13
INB 5
12
NC 6
11
GND 1 7
10
NC 8
9
ISO 7521
GND 1 1
16
NC 2
15
VCC 1 3
14
OUTA 4
13
INB 5
12
NC 6
11
GND 1 7
10
NC ⁸
9
NC = No Internal Connection
GND 2
NC
VCC 2
OUTA
OUTB
NC
NC
GND 2
GND 2
NC
VCC 2
INA
OUTB
NC
NC
GND 2
DESCRIPTION
The ISO7520 and ISO7521 provide double galvanic
isolation of up to 5KVrms for 1 minute per UL. These
digital isolators have two isolated channels with
uni-directional (ISO7520) and bi-directional (ISO7521)
channel configurations. Each isolation channel has a
logic input and output buffer separated by a silicon
oxide (SiO₂) insulation barrier. Used in conjunction
with isolated power supplies, these devices prevent
noise currents on a data bus or other circuits from
entering the local ground and interfering with or
damaging sensitive circuitry.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010, Texas Instruments Incorporated