78Q2120C Teridian Semiconductor Corp. (TDK Semiconductor), 78Q2120C Datasheet - Page 21

• Manufacturer Part Number: 78Q2120C
• Description: 10/100 Ethernet PHYS
• Manufacturer: Teridian Semiconductor Corp. (TDK Semiconductor)

78Q2120C
10/100BASE-TX Transceiver
MII Transmit Interface
© 2003 TDK Semiconductor Corporation, Proprietary and Confidential
DIGITAL TIMING CHARACTERISTICS
PARAMETER
Low-to-High Threshold
High-to-Low Threshold
Input Current
Input Capacitance
CHARACTERISTICS
Setup Time: TX_CLK to
TXD[3:0], TX_EN, TX_ER
Hold Time: TX_CLK to
TXD[3:0], TX_EN, TX_ER
CKIN-to-TX_CLK Delay
TX_CLK Duty-Cycle
PARAMETER
Output Voltage Low
Output Voltage High
Output Transition Time
Tristate Output Leakage
Current
Pins of type CIS:
Pins of type CO, COZ, CIO:
SYMBOL
TX
TX
T
SYMBOL
SYMBOL
CKIN
TX_CLK
TXD[3:0]
or
TX_ER
CKIN
TX_EN
SU
HD
Iil, Iih
Voh
Vt+
Cin
Vol
Vt-
Transmit Inputs to the 78Q2120C
Tt
Iz
CONDITIONS
CONDITIONS
Iol = 8mA
Ioh = -8mA
C
Type COZ only
CONDITIONS
L
TX SU
= 20pF
- 21 -
T CKIN
TX HD
MIN
15
40
0.80
MIN
MIN
0
0
1.3
2.4
-1
-1
NOM
NOM
NOM
8
MAX
40
60
MAX
MAX
1.20
1.7
0.4
1
6
1
UNIT
Rev_1.1
ns
ns
ns
%
UNIT
UNIT
µA
µA
pF
ns
V
V
V
V