ISO508 Datasheet, PDF (1/6 Pages) Burr-Brown (TI) – Uni-Directional ISOLATED DIGITAL COUPLERS

®
ISO508
ISO508
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information, visit www.burr-brown.com
ISO508
Uni-Directional
ISOLATED DIGITAL COUPLERS
FEATURES
q LOW POWER CONSUMPTION:
< 12mW per Channel Typ.
q 1500Vrms ISOLATION:
100% Tested by Partial Discharge
q ASYNCHRONOUS OR SYNCHRONOUS
OPERATION
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/SEC TRANSFER RATE
q 1µSEC TRANSIENT RECOVERY
APPLICATIONS
q PARALLEL ADCs/DACs
q DIGITAL INTERFACES
q DIGITAL TRANSMISSION
q GROUND-LOOP ISOLATION
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 µP 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 –40°C to +85°C.
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DATA
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IN
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C
F
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T
S
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A
A
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T
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DATA
OUT
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LEI
CONT
OE
LEO
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©_{1998 Burr-Brown Corporation}
PDS-₁1422B
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I^PS^rinO^ted5ⁱⁿ0^U8^{.S.A. June, 1999}