Switching Characteristics (Notes 5, 6)
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified
Symbol
Parameter
Differential Propagation Delay
Conditions
Min
Typ Max Units
tPHLD
RL = 100Ω, CL = 50 pF
(Figures 2, 3)
6
10.5
16
ns
ns
ns
High to Low
tPLHD
Differential Propagation Delay
Low to High
6
11
16
tSKD
Differential Skew
0.5
2.0
|tPHLD–tPLHD
|
tSK1
tSK2
tTLH
Skew, Pin to Pin (same device)
Skew, Part to Part (Note 8)
Differential Transition Time
Low to High (20% to 80%)
Differential Transition Time
High to Low (80% to 20%)
Disable Time High to Z
Disable Time Low to Z
Enable Time Z to High
Enable Time Z to Low
1.0
3.0
4.2
2.0
5.0
10
ns
ns
ns
tTHL
4.7
10
ns
tPHZ
tPLZ
tPZH
tPZL
fMAX
(Figures 4, 5 )
12
9
20
20
32
32
ns
ns
22
22
32
ns
ns
Maximum Operating Frequency
(Note 9)
MHz
Note 1: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device
should be operated at these limits. The table of “Electrical Characteristics” specifies conditions of device operation.
Note 2: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground except differential volt-
ages V
, V
, V .
OD3
OD1
OD2
Note 3: All typical values are given for V = 3.3V and T = +25˚C.
CC
A
Note 4: Only one output shorted at a time. The output (true or complement) is configured High.
Note 5: f = 1 MHz, t and t ≤ 6 ns (10% to 90%).
r
f
Note 6: See TIA/EIA-422-B specifications for exact test conditions.
Note 7: This specification limit is for compliance with TIA/EIA-422-B and ITU-T V.11.
Note 8: Devices are at the same V
CC
and within 5˚C within the operating temperature range.
Note 9: All channels switching, output duty cycle criteria is 40%/60% measured at 50%. This parameter is guaranteed by design and characterization.
Parameter Measurement Information
DS012645-2
FIGURE 1. Differential Driver DC Test Circuit
3
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