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PI5C16212
24-Bit Bus Exchange Switch
Product Features
Near-Zero propagation delay 5-ohm switches connect inputs to outputs Direct bus connection when switches are ON Ultra-low quiescent power (0.1A typical) - Ideally suited for notebook applications * Industrial operating temperature: -40C to +85C * Packaging (Pb-free & Green available): - 56-pin 240-mil wide thin plastic TSSOP (A) - 56-pin 300-mil wide plastic SSOP (V) - 56-pin 173-mil wide plastic TVSOP (K) * * * *
Product Description
Pericom Semiconductor's PI5C16212 is a 24-bit bus exchange switches designed with a low On-Resistance allowing inputs to be connected directly to outputs. This device operates as a 24-bit bus switch or a 12-bit exchanger that provides data exchanging between the four signal ports via the data select pins (S0-S2).
Logic Block Diagram
ONE OF TWELVE CHANNELS 1A1 1 B1
Product Pin Configuration
S0
1A1 1A2 2 A1 2A2 3A1 3A2
1A2
1 B2
GND 4A1
4A2 5A1 5A2 6A1 6A2 7A1 7A2
FLOW CONTROL S0 S1 S2
VCC 8A1 GND
Truth Table
Function Disconnect A1 to B1 A1 to B2 A2 to B1 A2 to B2 Disconnect A1 to B1, A2 to B2 A1 to B2, A2 to B1 S2 L L L L H H H H S1 L L H H L L H H S0 L H L H L H L H A1 Z B1 B2 Z Z Z B1 B2 A2 Z Z Z B1 B2 Z B2 B1
8A2 9A1 9A2 10A1 10A2 11A1 11A2 12A1 12A2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
56-Pin A, K, V
56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29
S1 S2
1B1 1 B2 2B1 2 B2 3B1
GND
3 B2 4B1 4 B2 5B1 5 B2 6B1 6 B2 7B1 7 B2 8 B1
GND
8 B2 9B1 9 B2 10B1 10B2 11B1 11B2 12B1 12B2
Product Pin Description
Pin Name S 0- S 2 xAx xBx I/O I I/O I/O De s cription Select Inputs Bus A Bus B
Note: 1. H = High Voltage Level, L = Low Voltage Level, Z = High Impedance
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PI5C16212 24-Bit Bus-Exchange Switch
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 ..............-40C to +85C Supply Voltage to Ground Potential .......................... -0.5V to +7.0V DC Input Voltage ....................................................... -0.5V to +7.0V DC Output Current ................................................................ 120mA Power Dissipation ....................................................................... 1W
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.
Recommended Operating Condition
Parame te r VCC VIH VIL TA Supply Voltage High- Level Input Voltage Low- Level Input Voltage Operating Free- Air Temperature De s cription M in. 4 2 -- -40 M a x. 5.5 -- 0.8 85 C V Units
DC Electrical Characteristics (Over the Operating Range, TA = -40C to +85C, VCC = 5V 10%)
Parame te rs VIH VIL II IO ZH VIK IO S VH De s cription Input HIGH Voltage Input LOW Voltage Input Current High Impedance Output Current Clamp Diode Voltage Short Circuit Current(3) Input Hysteresis at Control Pins VCC = Min., VIN = 0.0V, ION = 64mA VC C = Min., VIN = 2.4V, IO N = 15mA Te s t Conditions (1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VC C = Max., VIN = VC C or GND VC C = 0, VIN = VC C 0 - A, B - VC C VC C = Min., IIN = -18mA A (B) = 0V, B (A) = VC C M in. 2.0 -0.5 -- -- -- -- 100 -- 20 -- 20 Typ(2) -- -- -- -- -- -0.7 -- 150 28 -- 35 M ax. -- 0.8 1 10 1 -1.2 -- -- 40 12 48 V mA mV A Units V
RON
Switch On Resistance(4)
Capacitance (TA = 25C, f = 1 MHz)
Parame te rs (5) C IN CO F F CO N De s cription Input Capacitance A/B Capacitance, Switch Off A/B Capacitance, Switch On Te s t Conditions VIN = 0V VIN = 0V VIN = 0V Typ. 3 6 12 M ax. 6 14 30 pF Units
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at VCC = 5.0V, TA = 25C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. 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. 5. This parameter is determined by device characterization but is not production tested. 2
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PI5C16212 24-Bit Bus-Exchange Switch
Power Supply Characteristics
Parame te rs ICC ICC(3) ICCD De s cription Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Supply Current per Input per MHz(5) SN = GND, Control Input Toggling 50% Duty Cycle Te s t Conditions (1) VCC = Max. VCC = 5.5V VCC = Max., A & B Pins Open VIN = GND or VCC VIN = 3.4V(4) M in. -- -- -- Typ.(2) 0.1 -- -- M ax. 3.0 0.2 0.25 Units A mA mA/ MHz
Notes: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for applicable device. 2. Typical values are at VCC = 5.0V, +25C ambient. 3. This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND. 4. Per TTL driven input (VIN = 2.7V, control inputs 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.
PI5C16212 Switching Characteristics over Operating Range
PI5C16212 Parame te rs tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ De s cription Propagation Delay(2,3), xAx to xBx, xBx to xAx Propagation Delay, S to Ax or Bx Bus Enable Time, S to xAx or xBx Bus Disable Time, S to xAx or xBx C L = 50pF RL = 500 ohms Conditions (1) Com. M in. -- 1.5 1.5 1.5 M a x. 0.25 7.5 ns 7.0 6.5 Units
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.
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PI5C16212 24-Bit Bus-Exchange Switch
56-Pin 173-Mil Wide Plastic TVSOP (K) Package
56
.169 .177
4.30 4.50
0.09 0.20 .0035 .008
1 .031 .041 0.80 1.05
0.45 .018 0.75 .030 .252 BSC 6.4 SEATING PLANE .047 1.20 Max.
.441 .449
11.20 11.40
.016 BSC 0.40 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS
.005 .009 0.13 0.23
.002 .006 0.05 0.15
56-Pin 240-Mil Wide Thin Plastic TSSOP (A) Package
56
.236 .244
6.0 6.2
1
.547 .555
13.9 14.1 1.20 .047 Max. SEATING PLANE
.004 0.09 .008 0.20 0.45 .018 0.75 .030 .319 BSC 8.1
.0197 BSC 0.50 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
.007 .011 0.17 0.27
.002 .006 0.05 0.15
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PI5C16212 24-Bit Bus-Exchange Switch
56-Pin 300-Mil Wide Thin Plastic SSOP (V) Package
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 18.29 .730 18.54 .015 0.381 x 45 .025 0.635
.008 0.20 Nom.
.110 2.79 Max .025 BSC 0.635 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS .008 .0135 0.20 0.34 .008 0.20 .016 0.40
0-8
Ordering Information
Ordering Code PI5C16212K PI5C16212KE PI5C16212A PI5C16212AE PI5C16212V PI5C16212VE Package Code K K A A V V 56-pin TVSOP Pb-free & Green, 56-pin TVSOP 56-pin TSSOP Pb-free & Green, 56-pin TSSOP 56-pin SSOP Pb-free & Green, 56-pin SSOP Package Description
Notes: 1. Thermal Characteristics can be found on the world wide web at: www.pericom.com/packaging/
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
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