Datasheet

ST2378E Test circuit
Doc ID 9489 Rev 2 11/20
5 Test circuit
Figure 4. Test circuit
Note: C
L
= 15/50 pF or equivalent (includes jig and probe capacitance).
R
1
= 1 K Ω or equivalent.
R
T
= Z
OUT
of pulse generator (typically 50 Ω ).
Note: X = do not care; Z = high impedance.
Table 7. Test circuit switches
Test
Switch
Driving I/O
VL
Driving I/O
VCC
Open drain driving
t
PLH
, t
PHL
Open Open Open
t
PZL
, t
PLZ
V
CC
V
L
-
t
PZH
, t
PHZ
GND GND -
Table 8. Truth table
Control pin Bidirectional input/outputs
OE I/O
VL
I/O
VCC
H
(1)
1. High level V
L
power supply referred.
H
(1)
H
(2)
2. High level V
CC
power supply referred.
H
(1)
LL
LZ Z