3.3V, 24-Bit 48-Bit Demux/Mux NanoSwitch Near-zero propagation de
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PI3B16248
3.3V, 24-Bit 48-Bit Demux/Mux NanoSwitch
Near-zero propagation delay 5-ohm typical 3.3V Fast switching speed: 4.5ns (max.) operating range: 3.0V 3.6V 500-ohm pulldown unconnected port Industrial operating temperature: 40°C +85°C Make-before-break action Packages available: 80-pin BQSOP
Product Description
Pericom Semiconductors PI3B series logic circuits produced using Companys advanced submicron CMOS technology. PI3B16248 3.3V, 24-bit 48-bit Mux/Demux Switch designed with resistance allowing inputs connected directly outputs.
Logic Block Diagram
1B13
2B13
1B12
1B24
2B12
2B24
Truth Table(1)
Function S2/S1
Note: High Voltage Level Voltage Level
PS8172C
04/12/02
PI3B16248 3.3V, 24-Bit 48-Bit, Demux/Mux NanoSwitch
Product Configuration
Application Circuit
128M DIMM
128M DIMM
128M DIMM
72:144 Switch
3B16248 128M DIMM
1B10
2B10
1B11 2B11
Core Logic
1B12
2B12
80-Pin
1B14 2B14
1B16 2B16
Bits
1B13 2B13
1B15 2B15
Bits Data, Bits ECC)
Memory Switching Application
1B17 2B17
1B18 2B18
1B19 2B19
1B20 2B20
1B21 2B21
1B22 2B22
1B23 2B23
1B24
2B24
PS8172C
04/12/02
PI3B16248 3.3V, 24-Bit 48-Bit, Demux/Mux NanoSwitch
Maximum Ratings
(Above which useful life impaired. user guidelines, tested.) Storage Temperature .65°C +150°C Ambient Temperature with Power Applied 40°C +85°C Supply Voltage Range 0.5V +4.6V Input Voltage .0.5V +4.6V Output Current 120mA Power Dissipation .0.5W
Note: Stresses greater than those listed under MAXIMUM RATINGS cause permanent damage device. This stress rating only functional operation device these other conditions above those indicated operational sections this specification implied. Exposure absolute maximum rating conditions extended periods affect reliability.
Electrical Characteristics (Over Operating Range, 40°C +85°C, 3.6V)
Parame cription Input HIGH Voltage Input Voltage Input HIGH Current Input Current Switch Resistance Max., Max., Min., 0.0V, 24mA Min., 0.0V, 12mA IOZH Input Capacitance Capacitance Power Supply Quiescent High Impedance Output Current Clamp Diode Voltage 25°C, 25°C, Max., Conditions 25.0 Typ.(2) Units
Min., 18mA
Note: Typical values shown 3.3V, +25°C ambient maximum loading.
PI3B16248 Electrical Characteristics (VCC 3.0V 3.6V, 40°C +85°C)
Com. Parame tPLH tEN(3) tDIS
cription Propagation Delay Enable Disable Make- before- break time
Conditions 50pF ohms 50pF ohms ohms 16248
Units
Notes: This parameter guaranteed tested Propagation Delays. switch contributes propagational delay other than delay resistance switch load capacitance. time constant switch alone order 0.25ns 50pF load. Since this time constant much smaller than rise/fall times typical driving signals, adds very little propagational delay system. Propagational delay switch when used system determined driving circuit driving side switch interaction with load driven side. test circuit waveforms.
PS8172C
04/12/02
PI3B16248 3.3V, 24-Bit 48-Bit, Demux/Mux NanoSwitch
80-pin BQSOP Package
.150 .157 3.80 4.00
.228 .244 5.80 6.20
.008 0.203 Gauge Plane
0.803 0.811 20.40 20.60
.019 0.50 .029 0.75
.010 0.254
0.50 .019
.010 .016 .063 1.60 .078
0.254 0.406
.0197 0.50
.007 .010 0.17 0.27
.002 .009 0.05 0.25
X.XX X.XX
DENOTES DIMENSIONS MILLIMETERS
Ordering Information
Part PI3B16248B Package BQSOP rature 40°C +85°C
Applications Information Logic Inputs
Logic control inputs driven +5.5V regardless supply voltage. example, given 5.0V supply, control select pins driven high 5.5V. Driving control select pins Rail-toRail® minimizes power consumption.
Power-Supply Sequencing Plug Information
Proper power-supply sequencing recommended CMOS devices. Always apply before applying signals input/output control pins.
Pericom Semiconductor Corporation 2380 Bering Drive Jose, 95131 1-800-435-2336 (408) 435-1100 http://www.pericom.com
PS8172C 04/12/02
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