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TP3402 Datasheet(PDF) 12 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # TP3402
Description  DASL Digital Adapter for Subscriber Loops
PDF  16 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

TP3402 Datasheet(HTML) 12 Page - National Semiconductor (TI)

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Timing Characteristics
Unless otherwise noted VCC ea5V g5% TA e 0 Cto70 C Typical characteristics are specified at VCC e 5V TA e 25 C
All signals are referenced to GND
Symbol
Parameter
Conditions
Min
Typ
Max
Units
MASTER CLOCK INPUT SPECIFICATIONS
FMCK
Master Clock Frequency
2048
MHz
Master Clock Tolerance
Measured Relative to the Slave MCLK
b
100
a
100
ppm
Master Clock Input Jitter
2048 MHz Input 18 kHz k f k 200 kHz
200
ns pk-pk
tWMH
Clock Pulse Width
VIH e VCC b 05V
190
ns
tWML
Hi
Low for MCLK
VIL e 05V
tMR
Rise and Fall Time
Used as a Logic Input
15
ns
tMF
of MCLK
B CHANNEL INTERFACE
(Figure 10)
FBCK
Bit Clock Frequency
Master Mode Only
2048
MHz
tWBH
Clock Pulse Width
VIH e 22V
190
ns
tWBL
Hi
Low for BCLK
VIL e 07V
tBR
Rise and Fall Time
Master Mode requirement for BCLK
15
ns
Source
tBF
of BCLK
tSFB
Set-Up Time FSa and
Master Mode Only
70
ns
FSb to BCLK Low
tHCFL
Hold Time BCLK Low to
Master Mode Only
100
ns
FSa and FSb Low
tWBH
Output Pulse Width
Slave Mode Only
195
ns
tWBL
High and Low for BCLK
Load e 2 LSTTL Inputs Plus 50 pF
tDCF
Delay Time BCLK High to
Slave Mode Only
115
ns
FSa FSb and FSc Transitions
Load e 2 LSTTL Inputs Plus 50 pF
tSBC
Set Up Time BX Valid
30
ns
to BCLK Low
tHCB
Hold Time BCLK Low to
50
ns
BX Invalid
tDCB
Delay Time BCLK High
Load e 2 LSTTL Inputs Plus 100 pF
160
ns
to Br Valid
tDCBZ
Delay Time BCLK Low to
Slave Mode Only
60
220
ns
Br High-Impedance
tDCT
Delay Time BCLK High
Load e 2 LSTTL Inputs Plus 100 pF
180
ns
to TSr Low
tDCTZ
Delay Time BCLK Low to
60
185
ns
TSr High-Impedance
tSMBC
Set-Up Time MBS
Master Mode Only
60
ns
to BCLK Low (Note 1)
(TP3401 and TP3403 only)
tWMBH
Width of MBS Input
Master Mode Only
125
m
s
High
(TP3401 and TP3403 only)
Note 1
MBS transitions may occur anywhere in the Frame and require no specific relationship to FSa or FSb
12



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