DS92LX2121_14 Datasheet, PDF (7/43 Pages) Texas Instruments – 10 - 50 MHz DC-Balanced Channel Link III Bi-Directional Control Serializer and Deserializer

DS92LX2121, DS92LX2122
www.ti.com
SNLS330J – MAY 2010 – REVISED JANUARY 2014
Recommended Operating Conditions (continued)
Supply Noise⁽¹⁾
Min
Nom
Max
V_DDn (1.8 V)
V_DDIO (1.8 V)
V_DDIO (3.3 V)
Operating Free Air
Input Clock Rate
Temperature (T_A)
25
25
50
-40
25
85
10
50
Units
mV_P-P
mV_P-P
mV_P-P
°C
MHz
(1) Supply noise testing was done with minimum capacitors (as shown on Figures 35, 36) on the PCB. A sinusoidal signal is AC coupled to
the V_DDn (1.8V) supply with amplitude = 25 mVp-p measured at the device V_DDn pins. Bit error rate testing of input to the Ser and output
of the Des with 10 meter cable shows no error when the noise frequency on the Ser is less than 1 MHz. The Des on the other hand
shows no error when the noise frequency is less than 750 kHz.
Serializer Electrical Characteristics^(1)(2)(3)
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
LVCMOS DC SPECIFICATIONS 3.3V I/O (TX INPUTS, RX OUTPUTS, GPIO, CONTROL INPUTS AND OUTPUTS)
V_IH
High Level Input Voltage
V_IL
Low Level Input Voltage
I_IN
Input Current
VIN = 3.0V to 3.6V
VIN = 3.0V to 3.6V
VIN = 0V or 3.6V
VIN = 3.0V to 3.6V
2.0
GND
-20
±1
V_OH
High Level Output Voltage
V_DDIO = 3.0V to
3.6V
2.4
V_OL
Low Level Output Voltage
I_OS
Output Short Circuit Current
V_DDIO = 3.0V to
3.6V
I_OH = +4mA
GND
Serializer
GPO Outputs
-24
V_OUT = 0V
Deserializer
LVCMOS
-39
Outputs
Register
I_OZ
TRI-STATE Output Current
RPWDNB = 0V, Address
V_OUT = 0V or V_DD (OSS_SEL =
-20
±1
0)
LVCMOS DC SPECIFICATIONS 1.8V I/O (TX INPUTS, RX OUTPUTS, GPIO, CONTROL INPUTS AND OUTPUTS)
V_IH
High Level Input Voltage
V_IN = 1.71V to
1.89V
0.65 V_IN
V_IL
Low Level Input Voltage
V_IN = 1.71V to
1.89V
GND
I_IN
Input Current
V_IN = 0V or 1.89V
V_IN = 1.71V to
1.89V
-20
±1
V_OH
High Level Output Voltage
V_OL
Low Level Output Voltage
V_DDIO = 1.71V to
1.89V
I_OH = −4mA
V_DDIO = 1.71V to
1.89V
I_OL = +4 mA
V_DDIO - 0.45
GND
Max Units
V_IN
V
0.8
V
+20
µA
V_DDIO
V
V
0.4
mA
+20
µA
V_IN + 0.3
V
0.35 V_IN
+20
µA
V_DDIO
V
0.45
V
(1) The Electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as
otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and
are not guaranteed.
(2) Current into device pins is defined as positive. Current out of a device pin is defined as negative. Voltages are referenced to ground
except VOD, ΔVOD, VTH and VTL which are differential voltages.
(3) Typical values represent most likely parametric norms at 1.8V or 3.3V, T_A = +25°C, and at the Recommended Operation Conditions at
the time of product characterization and are not guaranteed.
Copyright © 2010–2014, Texas Instruments Incorporated
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