Keysight Technologies 34950A - Electrical Characteristics

Keysight 34950A User’s Guide 11
Electrical Characteristics for Digital I/O Lines
The following simplified schematic shows the interface circuitry and specifications
for each of the 64 digital I/O lines:
VREF
OE
DOUT
DIN
EN
Zo = 10Ω
2.5 pF
VTHREF
+5V
+
-
1M
14.7 26.1
10K
Vcc
+5V
+5.1V
I/O
1 of 64
Rpullup
Active Drive:
V
in
0V – 5V
V
out
(L)
0.24V < V
out
< 0.55V
4mA < I
out
< 24mA
V
out
(H)
1.6V < V
out
< 5V
-4mA < I
out
< -24mA
Open Collector:
V
out
0V – 5V
-4 mA < I
out
< -24mA
V
cc
(< 2V)
V
cc
(> 2V)
215Ω < R
pullup
< 1 kΩ
215Ω < R
pullup
< 10 kΩ