PI3L500 Datasheet, PDF (4/7 Pages) Pericom Semiconductor Corporation – 3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethernet LAN Switch with Single Enable

PI3L500
3.3V, 8-Channel, 2:1 Mux/DeMux
Gigabit Ethernet LAN Switch w/Single Enable
Capacitance (T_A = 25°C, f = 1MHz)
Parameters⁽⁵⁾ Description
Test Conditions
Typ.
Max.
Units
C_IN
Input Capacitance
2.0
3.0
C_{OFF(B1, B2)}
Port B Capacitance, Switch OFF
V_IN = 0V
4.0
6.0
pF
C_ON(A/B)
A/B Capacitance, Switch ON
10.0
11.0
Notes:
1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V_CC = 3.3V, T_A = 25°C ambient and maximum loading.
3. Measured by the voltage drop between A and B pins at indicated current through the switch. ON resistance is determined by the lower of the
voltages on the two (A & B) pins.
4. This parameter is determined by device characterization but is not production tested.
Power Supply Characteristics
Parameters
Description
Test Conditions⁽¹⁾
Min. Typ.⁽²⁾
I_CC
Quiescent Power Supply Current
V_CC = Max., V_IN = GND or V_CC
—
0.5
Notes:
1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V_CC = 3.3V, T_A = 25°C ambient and maximum loading.
3. Per TTL driven input (control inputs only); A and B pins do not contribute to I_CC.
Max.
3.5
Units
mA
Dynamic Electrical Characteristics Over the Operating Range (T_A = –40°C to +85°C, V_CC = 3.3V ±10%, GND = 0V)
Parameter
Description
Test Conditions
Min. Typ.⁽²⁾ Max. Units
X_TALK
O_IRR
Crosstalk
OFF Isolation
R_L = 100Ω, f = 250MHz
—
–27 —
dB
—
–32 —
BW
Bandwidth –3dB
R_L = 100Ω
—
350 — MHz
Switching Characteristics
Paramenter
t_PD
Propagation Delay^(2,3)
Description
Min.
–
Typ.⁽²⁾
0.25
Max. Units
t_PZH, t_PZL
t_PHZ, t_PLZ
t_SK(o)
t_SK(p)
Line Enable Time - SEL to A_N, B_N
0.5
Line Disable Time - SEL to A_N, B_N
0.5
Output Skew between center port (A₄ to A₅) to any other port⁽²⁾
–
Skew between opposite transitions of the same output (t_PHL - t_PLH) ⁽²⁾
–
–
15.0
–
9.0
ns
0.1
0.2
0.1
0.2
Notes:
1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Guaranteed by design.
3. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the switch and the load capacitance. The
time constant for the switch alone is of the order of 0.25ns for 10pF load. Since this time constant is much smaller than the rise/fall times of
typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used in a system is
determined by the driving circuit on the driving side of the switch and its interactions with the load on the driven side.
4
PS8719A
03/02/05