ICS1894-40 Datasheet, PDF (28/52 Pages) Integrated Device Technology – 10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE

ICS1894-40
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
PHYCEIVER
DC and AC Operating Conditions
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the ICS1894-40. These ratings, which are
standard values for ICS commercially rated parts, are stress ratings only. Functional operation of the device at
these or any other conditions above those indicated in the operational sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical
parameters are guaranteed only over the recommended operating temperature range.
Parameter
VDD (measured to VSS)
Digital Inputs / Outputs
Storage Temperature
Junction Temperature
Soldering Temperature
Power Dissipation
Rating
-0.3 V to 3.6V
-0.3 V to VDD +0.3 V
-55° C to +150° C
125° C
260° C
See section “DC Operating Conditions for Supply Current”
Recommended Operating Conditions
Parameter
Ambient Operating Temperature - Commercial
Ambient Operating Temperature - Industrial
Power Supply Voltage (measured to VSS)
Symbol
T_A
T_A
VDD
Min. Max. Units
0 +70 ° C
-40 +85 ° C
+3.14 +3.47 V
Recommended Component Values
Parameter
Oscillator Frequency
TCSR Resistor Value
Minimum
Typical
–
25
–
1.8k
See figure ICS1893CK-40
TCSR
Maximum
–
–
Tolerance
±50 ppm †
1%
Units
MHz
Ω
LED Resistor Value
510
1k
10k
–
Ω
†There are two IEEE Std. 802.3 requirements that define the tolerance for the frequency of the oscillator.
• Clause 22.2.2.1 requires the MII TX_CLK to have an accuracy of ± 100 ppm.
• Clause 24.2.3.4 is more stringent. It requires the code-bit timer to have an accuracy of 0.005% (that is, ±50 ppm).
IDT™ / ICS™ 10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE 28
ICS1894-40 REV C 092909