Vdd_io = 1.8v – Rainbow Electronics AT77C105A User Manual
Page 6
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AT77C105A [Preliminary]
5419A–BIOM–01/05
VDD_IO = 1.8V
Note:
1. A minimum noise margin of 0.05 V
DD
should be taken for Schmitt trigger input threshold switching levels compared to V
IL
and V
IH
values.
Table 8. Digital Inputs
Logic Compatibility
CMOS
Name
Parameter
Conditions
Test Level
Min
Typ
Max
Unit
I
IL
Low level input current without pull-
up device
(1)
V
I
= 0V
I
1
µA
I
IH
High level input current without
pull-down device
(1)
V
I
= V
DD_IO
I
1
µA
I
IOZ
Tri-state output leakage without
pull-up/down device
(1)
V
I
= 0V or V
DD_IO
IV
1
µA
V
IL
Low level input voltage
(1)
I
0.4
V
DD_IO
(1)
V
V
IH
High level input voltage
(1)
I
0.6 V
DD
(1)
V
V
HYST
Schmitt trigger hysteresis
(1)
IV
0.15
V
DD_IO
0.3
V
DD_IO
V
Table 9. Digital Outputs
Logic Compatibility
CMOS
Name
Parameter
Conditions
Test Level
Min
Typ
Max
Unit
V
OL
Low level output voltage
I
OL
= 4 mA
V
DD
= 1.8V ±8%
I
0.15
V
DD_IO
V
V
OH
High level output voltage
I
OH
= -4 mA
V
DD
= 3.3V ±10%
I
0.85 V
DD
V