Datasheet

D
OUT+
D
OUT-
(D
OUT+
) - (D
OUT+
)
GND
0V
V
OD+
V
OD-
V
OS
V
ODp-p
V
OD+
V
OD-
Single-EndedDifferential
A
B
A'
B'
C
A
C
B
50:
50:
50:50:
Scope
DS92LV2421, DS92LV2422
SNLS321B –MAY 2010–REVISED APRIL 2013 www.ti.com
DC and AC Serial Control Bus Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol Parameter Conditions Min
(1)
Typ Max
(1)
Units
V
IH
Input High Level SDA and SCL 2.2 V
DD 3.3V
V
V
IL
Input Low Level Voltage SDA and SCL GND 0.8 V
V
HY
Input Hysteresis >50 mV
V
OL
SDA, IOL = 3mA 0 0.4 V
I
in
SDA or SCL, Vin = V
DDIO
or GND -15 +15 µA
t
R
SDA RiseTime – READ SDA, RPU = X, Cb ≤ 400pF 40 ns
t
F
SDA Fall Time – READ 25 ns
t
SU;DAT
Set Up Time – READ 520 ns
t
HD;DAT
Hold Up Time – READ 55 ns
t
SP
Input Filter 50 ns
C
in
Input Capacitance SDA or SCL <5 pF
(1) Specification is verified by design and is not tested in production.
AC Timing Diagrams and Test Circuits
Figure 3. Serializer Test Circuit
Figure 4. Serializer Output Waveforms
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