78Q2123R/F1 Maxim Integrated, 78Q2123R/F1 Datasheet - Page 30

• Manufacturer Part Number: 78Q2123R/F1
• Description: Ethernet ICs
• Manufacturer: Maxim Integrated

Specifications of 78Q2123R/F1

• Rohs: yes

78Q2123/78Q2133 Data Sheet
4.7
4.7.1 100BASE-TX Transmitter
Note: Measured at the line side of the transformer.
4.7.2 100BASE-TX Transmitter (Informative)
The specifications in the following table are included for information only. They are mainly a function of
the external transformer and termination resistors used for measurements.
4.7.3 100BASE-TX Receiver
30
Parameter
Peak Output Amplitude
(|Vp+|, |Vp-|)
(see note below)
Output Amplitude
Symmetry
Output Overshoot
Rise/Fall time (tr, tf)
Rise/Fall time Imbalance
Duty Cycle Distortion
Jitter
Parameter
Return Loss
Open-Circuit Inductance
Parameter
Signal Detect Assertion
Threshold
Signal Detect De-assertion
Threshold
Differential Input Resistance
Jitter Tolerance (pk-pk)
Baseline Wander Tracking
Signal Detect Assertion Time
Signal Detect De-assertion
Time
Analog Electrical Characteristics
Test Condition: Transformer P/N:
Line Termination:
Best-fit over 14 bit times;
0.4 dB Transformer loss
Percent of Vp+, Vp-
10-90% of Vp+, Vp-
Deviation from best-fit time-
grid;
010101... Sequence
Scrambled Idle
|tr - tf|
|Vp +|
|Vp -|
2 < f < 30 MHz
30 < f < 60 MHz
60 < f < 80 MHz
-8 < Iin < 8 mA
Not tested in production
Not tested
Not tested
Condition
Condition
Condition
TLA-6T103
100 Ω ±1%
16 20
0.98
Min
950
Min
500
275
−
-75
3
4
log
Min
350
16
10



30
MHz
f
Nom
Nom
600
350
20



Max
1050
1000
±250
Max
1.02
Max
500
700
425
+75
1.4
5
5
4
DS_21x3_001
mVppd
mVppd
mVpk
Unit
Unit
Unit
Rev. 1.6
kΩ
µH
dB
ns
ps
ps
ns
ns
µs
µs
%
%