Datasheet
DS91M047
www.ti.com
SNLS145E –JUNE 2008–REVISED APRIL 2013
DC ELECTRICAL CHARACTERISTICS
(1)(2)(3)(4)
(continued)
Over supply voltage and operating temperature ranges, unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Units
I
AB(OFF)
Driver High-Impedance Output Power-Off Current V
A
= V
B
, −1.4V ≤ V ≤ 3.8V
(I
A(OFF)
− I
B(OFF)
) DE = 0V −4 4 μA
0V ≤ V
DD
≤ 1.5V
C
A
Driver Output Capacitance 7.8 pF
C
B
Driver Output Capacitance 7.8 pF
V
DD
= 0V
C
AB
Driver Output Differential Capacitance 3 pF
C
A/B
Driver Output Capacitance Balance (C
A
/C
B
) 1
I
CC
Power Supply Current R
L
= 50Ω (All Outputs)
DI = V
DD
or GND (All Inputs)
65 75 mA
DE = V
DD
, DE = GND
f = 125 MHz
I
CCZ
TRI-STATE Power Supply Current R
L
= 50Ω (All Outputs)
DI = V
DD
or GND (All Inputs) 19 24 mA
DE = GND, DE = V
DD
SWITCHING CHARACTERISTICS
(1)(2)(3)
Over supply voltage and operating temperature ranges, unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Units
t
PHL
Differential Propagation Delay High to Low 1.5 3.1 5.0 ns
t
PLH
Differential Propagation Delay Low to High 1.5 3.1 5.0 ns
t
SKD1
Differential Pulse Skew |t
PHL
− t
PLH
|
(4)(5)
0 70 140 ps
R
L
= 50Ω
t
SKD2
Channel-to-Channel Skew
(4)(6)
0 70 200 ps
C
L
= 5 pF,
t
SKD3
Differential Part-to-Part Skew
(4)(7)
C
D
= 0.5 pF
0 0.8 1.5 ns
(Constant T
A
and V
DD
)
See Figure 6 and Figure 7
t
SKD4
Differential Part-to-Part Skew
(8)
0 3.5 ns
t
TLH
Rise Time
(4)
1.1 2.0 3.0 ns
t
THL
Fall Time
(4)
1.1 2.0 3.0 ns
t
PHZ
Disable Time High to Z 7 12.5 ns
R
L
= 50Ω
t
PLZ
Disable Time Low to Z 7 12.5 ns
C
L
= 5 pF,
C
D
= 0.5 pF
t
PZH
Enable Time Z to High 7 12.5 ns
See Figure 8 and Figure 9
t
PZL
Enable Time Z to Low 7 12.5 ns
f
MAX
Maximum Operating Frequency See
(4)
125 MHz
(1) The Electrical Characteristics 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
ensured.
(2) Typical values represent most likely parametric norms for V
DD
= +3.3V and T
A
= +25°C, and at the Recommended Operating Conditions
at the time of product characterization and are not ensured.
(3) C
L
includes fixture capacitance and C
D
includes probe capacitance.
(4) Specification is specified by characterization and is not tested in production.
(5) t
SKD1
, |t
PLHD
− t
PHLD
|, Pulse Skew, 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
SKD2
, Channel-to-Channel Skew, is the difference in propagation delay (t
PLHD
or t
PHLD
) among all output channels.
(7) t
SKD3
, Part-to-Part Skew, is defined as the difference between the minimum and maximum differential propagation delays. This
specification applies to devices at the same V
DD
and within 5°C of each other within the operating temperature range.
(8) t
SKD4
, Part-to-Part Skew, is the differential channel-to-channel skew of any event between devices. This specification applies to devices
over recommended operating temperature and voltage ranges, and across process distribution. t
SKD4
is defined as |Max − Min|
differential propagation delay.
Copyright © 2008–2013, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Links: DS91M047