Spc3 profibus interface center, 4 ac-specification for the output drivers – Siemens SPC3 User Manual
Page 47
SPC3
PROFIBUS Interface Center
SPC3 Hardware Description
V1.3
Page 45
Copyright (C) Siemens AG 2003 All rights reserved.
2003/04
Tabel 8.3: DC-Specifikation of the I/O- Drivers
AMI-Vers. ST-Vers.
AMI-Vers.
ST-Vers. AMI-Vers. ST-Vers.
Input capacity
CIN
n.c
n.c.
5
10
n.c.
n.c.
pF
Output capacity
COUT
n.c
n.c.
5
10
n.c.
n.c.
pF
I/O-capacity
CI/O
n.c.
n.c.
5
10
n.c.
n.c.
pF
Tabel 8.4: Capacity of the I/O drivers
Parameter
Des
Min
Max
unit
AMI-Vers. ST-Vers. AMI-Vers. ST-Vers.
Input leakage current
I
I
-1
-1
1
1
µ
A
Tristate
output
leakage
current
I
OZ
-10
-10
10
10
µ
A
Tabelle 8.5: Leakage current of the output drivers
8.4 AC-Specification for the Output Drivers
Signal lineeitung
Driver type
Unit
kap. Last
AMI-Vers.
ST-Vers.
DB(7:0)
Tristate
8
8
mA
100pF
TXD
Tristate
8
8
mA
50pF
RTS
Tristate
8
8
mA
50pF
X/INT
Tristate
8
4
mA
50pF
XREADY/XDSACK
Tristate
8
4
mA
50pF
XDATAEXCH
Tristate
8
8
mA
50pF
CLKOUT2/4
Tristate
8
8
mA
100pF
Driver power
Hint:
The output power of the AMI-drivers is entspricht 8mA under the circumstances described in Tabel 8.3
Tabel 8.6: AC-Specifikation of the output drivers