Datasheet

DS90LT012AQ
www.ti.com SNLS297E –MAY 2008–REVISED APRIL 2013
Electrical Characteristics (continued)
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified.
(1)(2)
Symbol Parameter Conditions Pin Min Typ Max Units
V
OH
Output High Voltage I
OH
= −0.4 mA, V
ID
= +200 mV TTL OUT 2.4 3.1 V
I
OH
= −0.4 mA, Inputs terminated 2.4 3.1 V
I
OH
= −0.4 mA, Inputs shorted 2.4 3.1 V
V
OL
Output Low Voltage I
OL
= 2 mA, V
ID
= −200 mV 0.3 0.5 V
I
OS
Output Short Circuit Current V
OUT
= 0V
(3)
−15 −50 −100 mA
V
CL
Input Clamp Voltage I
CL
= −18 mA −1.5 −0.7 V
I
DD
No Load Supply Current Inputs Open V
DD
5.4 9 mA
(3) Output short circuit current (I
OS
) is specified as magnitude only, minus sign indicates direction only. Only one output should be shorted
at a time, do not exceed maximum junction temperature specification.
Switching Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified.
(1)(2)(3)(4)
Symbol Parameter Conditions Min Typ Max Units
t
PHLD
Differential Propagation Delay High to Low C
L
= 15 pF 1.0 1.8 3.5 ns
t
PLHD
Differential Propagation Delay Low to High V
ID
= 200 mV 1.0 1.7 3.5 ns
t
SKD1
Differential Pulse Skew |t
PHLD
− t
PLHD
|
(5)
(Figure 3 and Figure 4) 0 100 400 ps
t
SKD3
Differential Part to Part Skew
(6)
0 0.3 1.0 ns
t
SKD4
Differential Part to Part Skew
(7)
0 0.4 2.5 ns
t
TLH
Rise Time 350 800 ps
t
THL
Fall Time 175 800 ps
f
MAX
Maximum Operating Frequency
(8)
250 MHz
(1) All typicals are given for: V
DD
= +3.3V and T
A
= +25°C.
(2) These parameters are ensured by design. The limits are based on statistical analysis of the device performance over PVT (process,
voltage, temperature) ranges.
(3) C
L
includes probe and jig capacitance.
(4) Generator waveform for all tests unless otherwise specified: f = 1 MHz, Z
O
= 50Ω, t
r
and t
f
(0% to 100%) ≤ 3 ns for IN±.
(5) t
SKD1
is the magnitude difference in differential propagation delay time between the positive-going-edge and the negative-going-edge of
the same channel.
(6) t
SKD3
, part to part skew, is the differential channel-to-channel skew of any event between devices. This specification applies to devices
at the same V
DD
and within 5°C of each other within the operating temperature range.
(7) t
SKD4
, part to part skew, is the differential channel-to-channel skew of any event between devices. This specification applies to devices
over the recommended operating temperature and voltage ranges, and across process distribution. t
SKD4
is defined as |Max − Min|
differential propagation delay.
(8) f
MAX
generator input conditions: t
r
= t
f
< 1 ns (0% to 100%), 50% duty cycle, differential (1.05V to 1.35 peak to peak). Output criteria:
60%/40% duty cycle, V
OL
(max 0.4V), V
OH
(min 2.4V), load = 15 pF (stray plus probes).
Parameter Measurement Information
Figure 3. Receiver Propagation Delay and Transition Time Test Circuit
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