S1R72105 Technical Manual
Rev.1.0
EPSON
65
*
1
(13) Output characteristics (Ta = 0 to 70
°
C,V
SS
= 0V) (I
OL
= 48mA)
Names of signals covered: XSDB0 to 7, XSDBP, XSREQ, XSACK
Item Symbol
Conditions
Min.
Typ.
Max.
Unit
HIGH level
Output voltage
V
OH
HV
DD
=Min.
I
OH
=-20mA
1.5
-
-
V
LOW level
Output voltage
V
OL
HV
DD
=Min.
I
OL
=48mA
-
- 0.4 V
*1: V
OH
of the active negation cell meets Active negation Current vs. Voltage defined in the American National
Standard X3T10/1071D for Information Systems - SCSI-3 Fast20.
(14) Output characteristics (Ta = 0 to 70
°
C, V
SS
= 0V)
Names of signals covered: DP, DM
Item Symbol
Conditions
Min.
Typ.
Max.
Unit
HIGH level
Output voltage
V
OH
LV
DD
=Min.
I
OH
=-0.5mA
2.8
-
- V
LOW level
Output voltage
V
OL
LV
DD
=Min.
I
OL
=3.0mA
-
- 0.3 V
8.4 AC Characteristics
Measurement conditions of AC characteristics:
Ta = 0 to 70
°
C HV
DD
= 5V±10% LV
DD
= 3.3V±0.3V
V
SS
= 0V
DC level to determine input
0.8V to 2.4V
Operating clock
f
oscin
=20MHz (internal 40/48MHz operation):PLL operation
Loading conditions of output pins except SCSI pins
Drives load capacitance of 50pF and 1TTL.
Load capacitance of SCSI pins
Load capacitance = 100pF, pull-up resistance = 110
Ω
/pull-down resistance = 165
Ω