DS92CK16TMTCX Datasheet, PDF (5/17 Pages) Tyco Electronics – DS92CK16 3V BLVDS 1 to 6 Clock Buffer/Bus Transceiver

DS92CK16
www.ti.com
SNAS044C – NOVEMBER 1999 – REVISED APRIL 2013
Switching Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified ^{(1) (2)}.
Symbol
Parameter
Conditions
Min
DIFFERENTIAL RECEIVER CHARACTERISTICS
t_PHLDR
Differential Propagation Delay High to Low. CLKI/O to CLK_OUT C_L = 15 pF
1.3
t_PLHDR
Differential Propagation Delay Low to High. CLKI/O to CLK_OUT
VID = 250 mV
Figure 1 Figure 2
1.3
t_SK1R
Duty Cycle Distortion⁽³⁾
(pulse skew)
|t_PLH–t_PHL|
t_SK2R
Channel to Channel Skew; Same Edge ⁽⁴⁾
t_SK3R
Part to Part Skew ⁽⁵⁾
t_TLHR
Transition Time Low to High ⁽⁶⁾
(20% to 80% )
0.4
t_THLR
Transition Time High to Low⁽⁶⁾
(80% to 20% )
0.4
t_PLHOER
Propagation Delay Low to High
( OEto CLK_OUT)
t_PHLOER
f_MAX
Propagation Delay High to Low
(OE to CLK_OUT)
Maximum Operating Frequency ⁽⁷⁾
DIFFERENTIAL DRIVER TIMING REQUIREMENTS
C_L = 15 pF
Figure 3 Figure 4
1.0
1.0
100
t_PHLDD
Differential Propagation Delay High to Low. CrdCLK_IN to
CLKI/O
C_L = 15 pF
R_L = 37.5Ω
0.5
t_PLHDD
Differential Propagation Delay Low to High. CrdCLK_IN to
CLKI/O
Figure 6 Figure 7
0.5
t_PHLCrd
t_PLHCrd
t_SK1D
t_SK2D
t_TLHD
t_THLD
CrdCLK_IN to CLK_OUT Propagation Delay High to Low
CrdCLK_IN to CLK_OUT Propagation Delay Low to High
Duty Cycle Distortion (pulse skew)
|t_PLH–t_PHL| ⁽⁸⁾
Differential Part-to-Part Skew ⁽⁹⁾
Differential Transition Time ⁽⁶⁾
(20% to 80% )
Differential Transition Time ⁽⁶⁾
(80% to 20% )
C_L = 15 pF
2.0
Figure 8 Figure 9
2.0
0.4
0.4
t_PHZD
t_PLZD
t_PZHD
t_PZLD
f_MAX
Transition Time High to TRI-STATE. DE to CLKI/O
Transition Time Low to TRI-STATE. DE to CLKI/O
Transition Time TRI-STATE to High. DE to CLKI/O
Transition Time TRI-STATE to Low. DE to CLKI/O
Maximum Operating Frequency ⁽⁷⁾
V_IN = 0V to V_CC
C_L = 15 pF,
R_L = 37.5Ω
Figure 10 Figure 11
100
Typ
2.8
2.9
100
30
1.4
1.3
3
3
125
1.8
1.8
4.5
4.5
0.75
0.75
125
Max Units
3.8
ns
3.8
ns
400
ps
80
ps
2.5
ns
2.4
ns
2.2
ns
4.5
ns
4.5
ns
MHz
2.5
ns
2.5
ns
6.0
ns
6.0
ns
600
ps
2.0
ns
1.4
ns
1.4
ns
10
ns
10
ns
32
ns
32
ns
MHz
(1) C_L includes probe and fixture capacitance.
(2) Generator waveform for all tests unless otherwise specified: f = 25 MHz, Zo = 50Ω, t_r = 1 ns, t_f = 1 ns (10%–90%). To ensure fastest
propagation delay and minimum skew, clock input edge rates should not be slower than 1 ns/V; control signals not slower than 3 ns/V.
In general, the faster the input edge rate, the better the AC performance.
(3) t_SK1R is the difference in receiver propagation delay (|t_PLH–t_PHL|) of one device, and is the duty cycle distortion of the output at any given
temperature and V_CC. The propagation delay specification is a device to device worst case over process, voltage and temperature.
(4) t_SK2R is the difference in receiver propagation delay between channels in the same device of any outputs switching in the same
direction. This parameter is specified by design and characterization.
(5) t_SK3R, part-to-part skew, is the difference in receiver propagation delay between devices of any outputs switching in the same direction.
This specification applies to devices over recommended operating temperature and voltage ranges, and across process distribution.
T_SK3R is defined as Max–Min differential propagation delay.This parameter is specified by design and characterization.
(6) All device output transition times are based on characterization measurements and are specified by design.
(7) Generator input conditions: t_r/t_f < 1 ns, 50% duty cycle, differential (1.10V to 1.35V pk-pk). Output Criteria: 60%/40% duty cycle,
V_OL(max) 0.4V, V_OH(min) 2.7V, Load = 7 pF (stray plus probes).
(8) t_SK1D is the difference in driver propagation delay (|t_PLH–t_PHL|) and is the duty cycle distortion of the CLKI/O outputs.
(9) t_SK2D part-to-part skew, is the difference in driver propagation delay between devices of any outputs switching in the same direction.
This specification applies to devices over recommended operating temperature and voltage ranges, and across process distribution.
t_SK2D is defined as Max–Min differential propagation delay.
Copyright © 1999–2013, Texas Instruments Incorporated
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