PI3C16212 Datasheet, PDF (3/4 Pages) Pericom Semiconductor Corporation – 3.3V, High Bandwidth, 24-Bit Bus Exchange Switch

PI3C16212
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Power Supply Characteristics
Parameters
Description
I_CC
Quiescent Power Supply Current
∆I_CC
Supply Current per Input @ TTL HIGH
Test Conditions⁽¹⁾
V_CC = Max., V_IN = GND or V_CC
V_CC = Max., V_{IN =} 3.0V⁽³⁾
Min.
—
—
Typ.⁽²⁾
260
—
Max. Units
850
µA
750
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at V_CC = 3.3V, +25°C ambient.
3. Per TTL driven input (control inputs only); A and B pins do not contribute to I_CC.
4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified
frequency. The A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is
guaranteed by design.
PI3C16212 Switching Characteristics Over Operating Range
Parameters
Description
Conditions⁽¹⁾
Com.
Min.
Max.
Units
t_PLH
Propogation Delay^(2,3)
t_PHL
Ax to Bx, Bx to Ax
C_L = 50pF
R_L = 500Ω
—
0.50
t_PZH
Bus Enable Time
t_PZL
Sn to Ax or Bx
t_PHZ
Bus Disable Time
t_PLZ
Sn to Ax or Bx
C_L = 50pF
R_L = 500Ω
1.5
6.5
ns
1.5
5.5
Notes:
1. See test circuit and waveforms.
2. This parameter is guaranteed but not tested on Propagation Delays.
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 50pF 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 interaction
with the load on the driven side.
3
PS8454C 01/11/02