PI3B3251 Datasheet, PDF (3/3 Pages) Pericom Semiconductor Corporation – 3.3V 8:1 MUX /DEMUX BUS SWITCH

PI3B3251
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Power Supply Characteristics
Parameters Description
Test Conditions⁽¹⁾
Min. Typ.⁽²⁾ Max.
I_CC
∆I_CC
Quiescent Power
Supply Current
Supply Current per
Input @ TTL HIGH
V_CC = Max.
V_CC = Max.
V_IN = GND or VCC
V_IN = 3.0V⁽³⁾
0.1
3
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 input only); I and Y pins do not contribute to I_CC.
Units
µA
µA
Switching Characteristics over Operating Range
Parameters Description
t_PD
Propagation Delay^(2,3)
In to Y
t_SY
Bus Enable Time
Sn to Y
t_PZH
Bus Enable Time
t_PZL
E to Y
t_PHZ
Bus Disable Time
t_PLZ
E to Y
Conditions⁽¹⁾
CL = 50pF
R_L = 500Ω
C_L = 50pF R_L = 500Ω
C_L = 50pF R_L = 500Ω
C_L = 50pF R_L = 500Ω
PI3B3251
Com.
Min. Max.
0.25
1
4.5
1
3.5
1
5.5
Units
ns
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.
Ordering Information
Part Number
Pin / Package
PI3B3251Q
16-QSOP (Q)
PI3B3251W
16-SOIC (W)
PI3B3251L
16-TSSOP (L)
Temperature
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax [phone] • http://www.pericom.com
3
PS8150D
05/15/01