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PI3B16292 PI3B162292 (25)
Features
* * * * * * * * * Near-zero propagation delay 5 switches connect inputs to outputs Fast Switching Speed - 5ns (max.)(16292) Internal 500 pull-down on A2 ports Ultra-low quiescent power (0.2A typical) - Ideally suited for notebook applications Vcc Operating Range : 3.0V to 3.6V Industrial operating temperature: -40C to +85C Make-before-break switching Packages available: - 56-pin 240-mil wide thin plastic TSSOP (A) - 56-pin 300-mil wide plastic SSOP (V)
Description
3.3Volt, 24-Bit Mux/Demux BusSwitch
Pericom Semiconductor's PI3B series of logic circuits are produced using the Company's advanced 0.35 micron CMOS technology. The PI3B16292 and PI3B162292 are 3.3 volt, 12-bit to 24-bit Mux/Demux Bus switches designed with a low ON resistance allowing inputs to be connected directly to outputs. The PI3B162292 device has a built-in 25-ohm series resistor to reduce noise resulting from reflections, thus eliminating the need for an external terminating resistor. A2 port is not externally connected and, as a result, has an internal 500-ohm pulldown resistor to ground.
Pin Configuration
S0
1A1
Applications
* Memory switching
NC1
1 2 3 4 5 6 7 8 9
56 55 54 53 52 51
NC NC
1B1 1B2 2B1 2B2 3B1
Logic Block Diagram
2A1
NC1
3A1
NC1 GND
4A1
NC1
5A1
NC1
6A1
NC1
7A1
NC1 VCC
8A1
GND NC1
9A1
50 49 48 10 47 11 46 12 56-PIN 45 13 A, V 44 14 43 15 42 16 41 17 40 18 39 19 38 20 21 22 23 24 25 26 27 28 37 36 35 34 33 32 31 30 29
GND
3B2 4B1 4B2 5B1 5B2 6B1 6B2 7B1 7B2 8B1
GND
8B2 9B1 9B2 10B1 10B2 11B1 11B2 12B1 12B2
NC1
Truth Table
Function A1 to B1, A2 to B2 A1 to B2, A2 to B1 S0 L H A1 B1 B2 A2 B2 B1
10A1
NC1
11A1
NC1
12A1
NC1
Note: 1. H = High Voltage Level L = Low Voltage Level Z = High Impedance
Product Pin Description
Pin Name S0 xA1 xBx NC NC1 I/O I
I/O I/O
Description Select Inputs Bus A Bus B Leave it unconnected Leave it unconnected
1
PS8177A
12/14/98
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B16292/162292 3.3V, 24-Bit Mux/Demux BusSwitch (25)
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ............................................ -65C to +150C Ambient Temperature with Power Applied ............. -0C to +85C Supply Voltage Range ............................................. -0.5V to +4.6V DC Input Voltage .................................................... -0.5V to +4.6V DC Output Current .............................................................. 120 mA Power Dissipation ................................................................ 0.5Watt Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
DC Electrical Characteristics (Over the Operating Range, TA = -40C to +85C, VCC = 3.0V to 3.6V)
Parameters Description VIH VIL II VIK RON Input HIGH Voltage Input LOW Voltage Input Current Clamp Diode Voltage Switch On Resistance
(3)
Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC or GND VCC = 0, VIN = VCC VCC = Min., IIN = -18mA VCC = Min., VIN = 0.0V, ION = 64mA VCC = Min., VIN = 2.4V, ION = 15mA 16292 162292 16292 162292
Min. 2.0 -0.5 -- -- -- -- 20 -- 20
Typ(2) -- -- -- -- -0.7 5 28 10 35
Max. -- 0.8 1 10 -1.2 8 40 15 48
Units V V A A V
Capacitance (TA = 25C, f = 1 MHz)
Parameters(4) CIN CON Description Input Capacitance A/B Capacitance, Switch On Test Conditions VIN = 0V VIN = 0V Max. 3.0 30.0 Units pF pF
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, TA = 25C ambient and maximum loading. 3. Measured by the voltage drop between A and B pin 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.
2
PS8177A
12/14/98
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B16292/162292 3.3V, 24-Bit Mux/Demux BusSwitch (25)
Power Supply Characteristics
Parameters ICC ICC(3) ICCD Description Quiescent Power Supply Current Supply Current for S0 @ TTL HIGH Supply Current for S0 per MHz(5) Toggling 50% Duty Cycle VCC = MAX. VCC = MAX. VCC = Max., A and B Pins Open Test Conditions(1) VIN = GND or VCC VIN = 3.0 V(4) Other Inputs at VCC OR GND Min. -- -- -- Typ(2) -- -- -- Max. 10 750 0.25 Units A A mA/ MHz
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for applicable device. 2. Typical values are at Vcc = 3.3V, +25C ambient. 3. This is the increase in supply current for S0 at the specified TTL voltage level rather than VCC or GND. 4. Per driven input ( S0 only); A and B pins do not contribute to Icc. 5. 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.
PI3B16292 Switching Characteristics over Operating Range
Com. Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ tm Description Propagation Delay(2,3) xA1 to xBx, xBx to xA1 Bus Enable time S to xA1 or xBx Bus Disable time S to xA1 or xBx Make-before-break time(2) Conditions(1) Min. -- CL = 50 pF RL = 500 R = 500 to 6V(4) 1 1 0 Max. 0.25 4.5 5.0 2 ns Units
PI3B162292 Switching Characteristics over Operating Range
Com. Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ tm Description
(2,3)
Conditions
(1)
Min. -- 1 1 0
Max. 1.25 5 5.5 2
Units
Propagation Delay xA1 to xBx, xBx to xA1 Bus Enable time CL = 50 pF S to xA1 or xBx RL = 500 Bus Disable time R = 500 to 4.6V(4) S to xA1 or xBx Make-before-break time(2)
ns
Notes: 1. See test circuit and waveforms. 2. This parameter is guaranteed but not tested. 3. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the switch and 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 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. 4. Applies to tPLZ and tPZL.
3
PS8177A
12/14/98
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B16292/162292 3.3V, 24-Bit Mux/Demux BusSwitch (25)
56-Pin SSOP (300 MIL WIDE) - Package Code: V56
56
.291 .299 7.39 7.59
.396 .416 10.06 10.56
Gauge Plane .010 0.25 .02 .04 0.51 1.01
1 .720 .730 18.29 18.54 .015 0.381 x 45 .025 0.635 .008 0.20 Nom.] .110 2.79 Max .008 .0135 0.20 0.34 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS 0-8 .008 0.20 .016 0.40
.025 BSC 0.635
56-Pin TSSOP (240 MIL WIDE) - Package Code: A56
56
.236 .244
6.0 6.2
1
.547 .555
13.9 14.1 1.20 .047 Max. SEATING PLANE
.004 .008 0.45 0.75 .0197 BSC 0.50 .07 .011 0.17 0.27 .002 .006 0.05 0.15 .018 .030
0.09 0.20
.319 BSC 8.1
X.XX DENOTES DIMENSIONS IN MILLIMETERS X.XX
Pericom Semiconductor Corporation 2380 Bering Drive * San Jose, CA 95131 * 1-800-435-2336 * Fax (408) 435-1100 * http://www.pericom.com
4
PS8177A 12/14/98

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