78Q2120-64CG ETC [List of Unclassifed Manufacturers], 78Q2120-64CG Datasheet - Page 25
78Q2120-64CG
Manufacturer Part Number
78Q2120-64CG
Description
10/100BASE-TX Ethernet Transceiver
Manufacturer
ETC [List of Unclassifed Manufacturers]
Datasheet
1.78Q2120-64CG.pdf
(33 pages)
- Current page: 25 of 33
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100BASE-TX TRANSMITTER
The specifications in the following table are not tested during production test. They are included for information only.
10BASE-T Transmitter
The Manchester-encoded data pulses, the link pulse and the start-of-idle pulse are tested against the templates
and using the procedures found in Clause 14 of IEEE 802.3.
** Measured at the line side of the transformer.
Test Conditions: Transformer p/n: TLA-6T103
PARAMETER
**Peak Differential Output Signal
Link Pulse Width
Start-of-Idle Pulse Width
PARAMETER
Signal Detect Assertion Threshold
(pk-pk)
Signal
(pk-pk)
Differential Input Resistance
PLL Locking Time
Jitter Tolerance (pk-pk)
Baseline Wander Tracking
Signal Detect Assertion Time
Signal Detect De-assertion Time
Detect
Line Termination: 100
RIBB: 9.76K ±1% @3.3V
De-assertion Threshold
±1%
CONDITION
All data patterns
CONDITION
25
MIN
MIN
600
300
300
-75
2.2
20
Ethernet Transceiver
NOM
NOM
900
350
100
5
4
10/100BASE-TX
MAX
MAX
1000
400
+75
200
350
1.4
2.8
78Q2120
UNIT
UNIT
mV
mV
k
ns
ns
ns
%
V
s
s
s
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