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Part: PI3C34X245Z
Category:
Interface and Interconnect
-> Mux/Demux/Switch Digital Bus
Description: 3.3V, High-Bandwidth, 32-Bit Bus Switch
Company: Pericom Semiconductor Corporation
Datasheet: Download PI3C34X245Z datasheet File size : 402 kB
Request For quote: Find where to buy PI3C34X245Z
Datasheet text preview:
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3C34X245
2.5V/3.3V, High Bandwidth, Hot Insertion 32-Bit, 2-Port, Bus Switch
Product Features
Near zero propagation delay 5-ohm switches connect inputs to outputs 2.5V Supply Voltage Operation Permits Hot Insertion 5V I/O Tolerant High Bandwidth Operation (>400 MHz) 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 PI3C series of logic circuits are produced using the Companys advanced submicron CMOS technology, achieving industry leading performance. The PI3C34X245 is a 2.5V or 3.3V, 32-bit, 2-port bus switch designed with a low ON resistance (5 ohms) allowing inputs to be connected directly to outputs. The bus switch creates no additional propagational delay or additional ground bounce noise. The switches are turned ON by the Bus Enable (BE) input signal. It is very useful in switching signals that have high bandwidth (>400 MHz).
Logic Block Diagram
A0 B0
Product Pin Configuration
NC A0 A1 A2 A3 A4 A5 A6 A7 GND NC A8 A9 A10 A11 A12 A13 A14 A15 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 80-P i n 65 B, Z 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 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
A7
B7
BE1
A8
B8
A15
B15
GND NC A16 A17 A18 A19 A20 A21 A22 A23 GND NC A24 A25 A26 A27
BE2
A16
B16
A23
B23
BE3
A28 A29 A30 A31
A24
B24
GND
A31
B31
Product Pin Description
Pin N ame BEn A0 A31 B0 B31
1
D e s cription Bus Enable Input (Active LO W) Bus A Bus B
PS8429C 08/03/01
BE4
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3C34X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 32-Bit, 2-Port, Bus Switch
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 +4.6V DC Input Voltage ......... 0.5V to +5.5V DC Output Current .......... 120mA 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 Operating Range, TA = 40°C to +85°C, VCC = 3.3V ±10%)
Parame te rs VIH VIL IIH IIL IOZH VIK RON De s cription Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current High Impedance Output Current Clamp Diode Voltage Switch On Resistance(3) 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 VCC = Min., VIN = 0.0V, ION = 48mA VCC = Min., VIN = 2.4V, ION = 15mA 0.73 5 8 M in. 2.0 0.5 0.8 ±1 ±1 ±1 1.2 7 15 V µA Typ(2) M ax. Units V
Capacitance (TA = 25°C, f = 1 MHz)
Parame te rs (4) 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. 3.5 5.0 10.0 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 = 3.3V, TA = 25°C 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
PS8429C
08/03/01
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3C34X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 32-Bit, 2-Port, Bus Switch
Power Supply Characteristics
Parame te rs ICC ICC De s cription Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Te s t Conditions (1) VCC = Max. VIN = GND or VCC VIN = 3.4V(3) M in. Typ(2) 1.0 M ax. 2.0 2.5 Units mA
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, +25°C ambient. 3. Per driven input (control input only); A and B pins do not contribute to ICC.
Switching Characteristics over 3.3V Operating Range
P13C34X245 Com. Parame te rs tPLH tPHL tPZH tPZL tPHZ tPLZ D e s cription Propagation Delay Bus Enable Time BE to Ax or Bx Bus Disable Time BE to Ax or Bx
(2,3) Ax
Conditions to Bx CL = 50pF RL = 500 ohms CL = 50pF RL = 500 ohms R = 500 ohms
M in.
M ax. 0.25
Units
1.5 1.5
6.5 5.5
ns
Switching Characteristics over 2.5V Operating Range
P13C34X245 Com. Parame te rs tPLH tPHL tPZH tPZL tPHZ tPLZ D e s cription Propagation Delay (2,3) Ax to Bx Bus Enable Time BE to Ax or Bx Bus Disable Time BE to Ax or Bx Conditions CL = 50pF RL = 500 ohms CL = 50pF RL = 500 ohms R = 500 ohms 1.5 1.5 M in. M ax. 0.25 9.8 8.3 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 timesof 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
PS8429C
08/03/01
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