PI3B34X245BE Datasheet, PDF (3/4 Pages) Pericom Semiconductor Corporation – iiFast Switching Speed - 4.5ns max.

PI3B34X245
3.3V, 32-Bit, 2-Port NanoSwitch™
Power Supply Characteristics
Parameters Description
Test Conditions⁽¹⁾
Min Typ ⁽²⁾ Max Units
ICC
ΔI_CC
Quiescent Power Supply
Current
Supply Current per
VCC = Max.
Input @ TTL HIGH
VIN = GND or VCC
VIN = 3.0V⁽³⁾
1.0
10
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 VCC = 3.3V, +25°C ambient.
3. Per driven input (control input 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.
Switching Characteristics over Operating Range
Com.
Parameters Description
Test Conditions ⁽¹⁾ Min Max Units
tPLH
Propagation Delay^(2,3) C_L = 50 pF
tPHL
Ax to Bx, Bx to Ax
RL = 500Ω
0.25
tPZH
Bus Enable Time
tPZL
BE to Ax or Bx
CL = 50 pF
RL = 500Ω
tPHZ
Bus Disable Time
R = 500Ω
tPLZ
BE to Ax or Bx
1.0
4.0
ns
1.0
4.5
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 ca-
pacitance. The time constant for the switch alone is of the order of 0.25 ns for 50 pF 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.
Applications Information
Logic Inputs
The logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a + 3.3V supply, IN may be
driven low to 0V and high to 3.6V. Driving IN Rail-to-Rail® minimizes power consumption.
Power-Supply Sequencing and Hot-Plug Information
Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC and GND before applying signals to
input/output or control pins.
Rail-to-Rail is a registeredtrademark of Nippon Motorola, Ltd.
All trademarks are property of their respective owners.
13-0160
3
www.pericom.com
PS8429F
10/23/13