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80960KB Scheda tecnica(PDF) 20 Page - Intel Corporation

Il numero della parte 80960KB
Spiegazioni elettronici  EMBEDDED 32-BIT MICROPROCESSOR WITH INTEGRATED FLOATING-POINT UNIT
PDF  44 Pages
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Produttore elettronici  INTEL [Intel Corporation]
Homepage  http://www.intel.com
Logo INTEL - Intel Corporation

80960KB Scheda tecnica(HTML) 20 Page - Intel Corporation

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80960KB
14
of a matched diode bridge. Since the open-drain
outputs sink current, only the IOL legs of the bridge
are necessary and the IOH legs are not used. When
the 80960KB driver under test is turned off, the
output pin is pulled up to VREF (i.e., VOH). Diode D1
is turned off and the IOL current source flows through
diode D2.
When the 80960KB open-drain driver under test is
on, diode D1 is also on and the voltage on the pin
being tested drops to VOL. Diode D2 turns off and IOL
flows through diode D1.
Figure 12. Test Load Circuit for Three-State
Output Pins
Figure 13. Test Load Circuit for Open-Drain
Output Pins
THREE-STATE OUTPUT
CL = 50 pF for all signals
CL
CL
OPEN-DRAIN OUTPUT
IOL
D2
IOL Tested at 25 mA
VREF = VCC
D1 and D2 are matched
D1
CL = 50 pF for all signals



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