1894K-43LF IDT, 1894K-43LF Datasheet - Page 33

• Manufacturer Part Number: 1894K-43LF
• Description: Ethernet ICs 3.3V 10/100 PHY RMII
• Manufacturer: IDT

Specifications of 1894K-43LF

• Rohs: yes
• Part # Aliases: ICS1894K-43LF

DC Operating Characteristics for REFIN
DC Operating Characteristics for MII Pins
Timing Diagrams
Timing for Clock Reference (REFIN) Pin
REFIN Timing Diagram
IDT® 10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
ICS1894-32
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
REFIN
The table below lists the 3.3V DC characteristics for the REFIN pin.
The table below lists DC operating characteristics for the Media Independent Interface (MII) for the ICS1894-32.
The table below lists the significant time periods for signals on the clock reference (REFIN) pin. The REFIN Timing
Diagram figure shows the timing diagram for the time periods.
Input High Voltage
Input Low Voltage
MII Input Pin Capacitance
MII Output Pin Capacitance
MII Output Drive Impedance
Period
Time
t1
t2
t1
t2
Parameter
Parameter
REFIN Duty Cycle (MII)
REFIN Period (MII)
REFIN Duty Cycle (RMII)
REFIN Period (RMII)
Parameter
Symbol
V
V
IH
IL
VDDIO = 3.3V
Conditions
Min.
2.97
–
–
–
t1
t2
Max.
Conditions
0.33
–
Min.
–
–
–
–
–
–
–
Units
V
V
33
Typ.
20
–
–
Min.
45
45
–
–
Max.
14
8
–
Typ.
50
40
50
20
Units
ICS1894-32
pF
pF
Max. Units
Ω
55
55
–
–
PHYCEIVER
ns
ns
%
%
REV M 021512