廬
ISO
508
ISO508
ISO
508
For most current data sheet and other product
information, visit www.burr-brown.com
Uni-Directional
ISOLATED DIGITAL COUPLERS
FEATURES
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LOW POWER CONSUMPTION:
< 12mW per Channel Typ.
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1500Vrms ISOLATION:
100% Tested by Partial Discharge
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ASYNCHRONOUS OR SYNCHRONOUS
OPERATION
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DOUBLE BUFFERED DESIGN FOR
EASY INTEGRATION INTO BUS-BASED
SYSTEMS
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TRI-STATE OUTPUTS
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24-PIN PDIP OR GULL WING PACKAGES
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2MWORDS/SEC TRANSFER RATE
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1
碌
SEC TRANSIENT RECOVERY
DESCRIPTION
ISO508 is an 8-channel, isolated, digital coupler based
on the Burr-Brown capacitive barrier technology. The
ISO508 has additional circuitry to ensure DC accuracy
and overcome the edge-sensitive nature of normal
capacitive devices even on power-up conditions. The
novel circuitry involved will restore the correct output
after a transient interruption should that be necessary.
The ISO508 is designed with input and output
buffers for ease of integration into a
碌P
bus system.
The output buffer has tri-state capability, and by
the use of OE, the output data bus lines can be
made to go high impedance. This feature of the
ISO508, which allows multiple access to a data
bus, requires extra circuitry when using an alterna-
tive solution.
ISO508 will transfer an 8-bit word at rates up to
2Mwords/s without the skew problems associated
in implementing this function with optocouplers.
The ISO508 is available in 24-pin PDIP or 24-pin
Gull Wing packages. Both are specified for opera-
tion from 鈥?0擄C to +85擄C.
APPLICATIONS
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PARALLEL ADCs/DACs
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DIGITAL INTERFACES
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DIGITAL TRANSMISSION
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GROUND-LOOP ISOLATION
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A
DATA
IN
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A
T
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S
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I
F
T
S
H
I
F
T
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A
T
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A
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DATA
OUT
LEI
CONT
OE
LEO
International Airport Industrial Park 鈥?Mailing Address: PO Box 11400, Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 鈥?Tel: (520) 746-1111 鈥?Twx: 910-952-1111
Internet: http://www.burr-brown.com/ 鈥?FAXLine: (800) 548-6133 (US/Canada Only) 鈥?Cable: BBRCORP 鈥?Telex: 066-6491 鈥?FAX: (520) 889-1510 鈥?Immediate Product Info: (800) 548-6132
廬
漏
1998 Burr-Brown Corporation
PDS-1422B
1
ISO508
Printed in U.S.A. June, 1999
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