Datasheet

DS92LV2421, DS92LV2422
SNLS321B –MAY 2010–REVISED APRIL 2013 www.ti.com
Recommended Operating Conditions
Min
(1)
Nom Max
(1)
Units
Supply Voltage (V
DDn
) 1.71 1.8 1.89 V
LVCMOS Supply Voltage (V
DDIO
) 1.71 1.8 1.89 V
OR
LVCMOS Supply Voltage (V
DDIO
) 3.0 3.3 3.6 V
Operating Free Air Temperature (T
A
) −40 +25 +85 °C
Clock Frequency 10 75 MHz
Supply Noise
(2)
50 mV
P-P
(1) Specification is verified by design and is not tested in production.
(2) Supply noise testing was done with minimum capacitors on the PCB. A sinusoidal signal is AC coupled to the V
DDn
(1.8V) supply with
amplitude = 100 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 750 kHz. The Des on the other hand shows no error when the
noise frequency is less than 400 kHz.
Serializer DC Electrical Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified.
(1)(2)(3)
Symbol Parameter Conditions Pin/Freq. Min
(4)
Typ Max
(4)
Units
LVCMOS INPUT DC SPECIFICATIONS
V
IH
High Level Input V
DDIO
= 3.0 to 3.6V DI[23:0], 2.2 V
DDIO
V
Voltage CI1,CI2,CI3,
V
DDIO
= 1.71 to 1.89V 0.65* V
DDIO
V
CLKIN, PDB,
V
DDIO
VODSEL,
V
IL
Low Level Input V
DDIO
= 3.0 to 3.6V GND 0.8 V
RFB,
Voltage
BISTEN,
V
DDIO
= 1.71 to 1.89V GND 0.35* V
CONFIG[1:0]
V
DDIO
I
IN
Input Current V
IN
= 0V or V
DDIO
V
DDIO
= 3.0 −15 ±1 +15 μA
to 3.6V
V
DDIO
= 1.7 −15 ±1 +15 μA
to 1.89V
CML DRIVER DC SPECIFICATIONS
(5)
V
OD
Differential Output R
L
= 100Ω, VODSEL = 0 ±205 ±280 ±355 mV
Voltage De-emph = disabled, Figure 4
VODSEL = 1 ±320 ±420 ±520
V
ODp-p
Differential Output VODSEL = 0 560 mVp-p
Voltage
VODSEL = 1 840 mVp-p
(DOUT+) –
(DOUT-)
ΔV
OD
Output Voltage R
L
= 100Ω, De-emph = disabled, VODSEL = L 1 50 mV
Unbalance
V
OS
Offset Voltage – R
L
= 100Ω, VODSEL = 0 1.65 V
DOUT+,
Single-ended De-emph = disabled
DOUT-
VODSEL = 1 1.57 V
At TP A & B,
5
Figure 3
ΔV
OS
Offset Voltage R
L
= 100Ω, De-emph = disabled 1 mV
Unbalance
Single-ended
At TP A & B,
Figure 3
I
OS
Output Short DOUT+/- = 0V, VODSEL = 0 −36 mA
Circuit Current De-emph = disabled
(1) The Electrical Characteristics tables list verified 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
verified.
(2) Typical values represent most likely parametric norms at V
DD
= 3.3V, Ta = +25 degC, and at the Recommended Operation Conditions at
the time of product characterization and are not verified.
(3) 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.
(4) Specification is verified by design and is not tested in production.
(5) Specification is verified by characterization and is not tested in production.
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