Rainbow Electronics AT77C105A - Manual (Page 6)

6
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
(1)
V
V
OH
High level output voltage
I
OH
= -4 mA
V
DD
= 3.3V ±10%
I 0.85 V
DD
V