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Details, datasheet, quote on part number:PI5C34X2245Z
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Datasheet text preview:
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C34X2245
Product Features
32-Bit, 2-Port Bus Switch with 25-Ohm Series Resistor
Near-zero propagation delay 25-ohm series resistor termination 5-ohm switches connect inputs to outputs Direct bus connection when switches are ON Ultra-low quiescent power (0.2µA typical) Ideally suited for notebook applications Pin compatible with QS34X245 Industrial operating temperature: 40°C to +85°C Packages available: 80-pin 150 mil wide plastic BQSOP (B) 80-pin plastic very Fine Pitch dual flat No lead (DFN) Z)
Product Description
Pericom Semiconductors PI5C series of logic circuits are produced using the Companys advanced submicron CMOS technology. The PI5C34X2245 is a 32-bit, 2-port bus switch. Four enable signals ( B E n ) turn the switches on. The bus switch creates no additional propagational delay or additional ground bounce noise. The device has a built-in 25-ohm resistor to reduce noise resulting from reflection, thus eliminating the need for an external terminating resistor.
Product Pin Configuration
NC A0 A1 A2 A3 A4 A5 A6 A7 GND NC A8 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 29 30 31 32 33 34 35 36 37 38 39 40 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 VCC BE1 B0 B1 B2 B3 B4 B5 B6 B7 VCC BE2 B8 B9 B10 B11 B12 B13 B14 B15 VCC BE3 B16 B17 B18 B19 B20 B21 B22 B23 VCC BE4 B24 B25 B26 B27 B28 B29 B30 B31
Logic Block Diagram
A0 B0
A7 BE1 A8
B7
B8
A9 A10 A11 A12 A13 A14 A15 GND NC A16 A17 A18 A19 A20 A21 A22 A23 GND NC A24 A25 A26 A27 A28 A29 A30 A31 GND
A15 BE2 A16
B15
B16
8 0 - P i n 62 B, Z 61
60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
A23 BE3 A24
B23
B24
A31 BE4
B31
Truth Table(1)
Function Disconnect Connect
Note: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance
BEn H L
A0 31 Hi- Z B0 31
Pin Name BEn A0- A31 B0- B31
1
Product Pin Description
I/O I I/O I/O D e s cription Bus Enable Input (Active LO W) Bus A Bus B
PS8196A 08/06/01
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C34X2245 32-Bit, 2-Port BusSwitch with 25-Ohm Series Resistor
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ... 65°C to +150°C Ambient Temperature with Power Applied .... 40°C to +85°C Supply Voltage to Ground Potential ....... 0.5V to +7.0V DC Input Voltage ............ 0.5V to +7.0V DC Output Current ...... 120 mA Power Dissipation .. 0.5W 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 = 40°C to +85°C, VCC = 5V ±10%)
Parame te rs VIH VIL IIH IIL IOZH VIK IOS RON De s cription Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current High Impedance Output Current Clamp Diode Voltage Short Circuit Current(3) Switch On Resistance(4) Te s t Conditions (1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND 0 - A, B - VCC VCC = Min., IIN = 18mA A (B) = 0V, B (A) = VCC VCC = Min., VIN = 0.0V, ION = 48mA VCC = Min., VIN = 2.4V, ION = 15mA M in. 2.0 0.5 100 Typ(2) 0.7 28 35 M ax. 0.8 ±1 ±1 ±1 1.2 40 48 V mA µA Units V
Capacitance (TA = 25°C, f = 1 MHz)
Parame te rs (5) CIN C O FF CON D e s cription Input Capacitance A/B Capacitance, Switch O ff A/B Capacitance, Switch O n VIN = 0V Te s t Conditions Typ. 6 6 12 pF Units
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, TA = 25°C 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
PS8196A
08/06/01
321098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 321098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C34X2245 32-Bit, 2-Port BusSwitch with 25-Ohm Series Resistor
Power Supply Characteristics
Parame te rs ICC ICC ICCD D e s cription Q uiescent Power Supply Current Supply Current per Input @ TTL HIGH Supply Current per Input per MHz(4) Te s t Conditions (1) VCC = Max. VCC = Max. VCC = Max., A & B Pins O pen BEn = GND, Control Input Toggling 50% Duty Cycle VIN = GND or VCC VIN = 3.4V(3) M in. Typ(2) M ax. Units 0.1 3.0 2.5 µA mA
0.25
mA/ MHz
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, +25°C ambient. 3. Per TTL driven input (VIN = 3.4V, control inputs only); A and B pins do not contribute to Icc. 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.
PI5C34X2245 Switching Characteristics over Operating Range
PI5C34X2245 Com. Parame te r tPLH tPHL tPZH tPZL tPHZ tPLZ D e s cription Propagation Delay(2,3) AX to Bx, Bx to Ax Bus Enable Time BEx to Ax or Bx Bus Disable Time BEx to Ax or Bx CL = 50pF RL = 500 ohms 1.5 1.5 Conditions (1) M in. M ax. 1.25 7.5 5.5 ns 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.
3
PS8196A
08/06/01
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