View PI5C162244_295433.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C16244/162244 16-BIT BUS SWITCH BUFFER PI5C16244
PI5C162244 (25)
Product Features:
* Near-zero propagation delay * 5 switches connect inputs to outputs when enabled * Direct bus connection when switches are ON * Ultra-low quiescent power (0.2 A typical) - Ideally suited for notebook applications * Pin compatible with 74 series16244 * Industrial operating temperature: -40C to +85C * Packages available: - 48-pin 240 mil wide thin plastic TSSOP (A) - 48-pin 300 mil wide plastic SSOP (V) - 48-pin 150 mil wide plastic BQSOP (B)
16-Bit BusSwitch
Product Description:
Pericom Semiconductor's PI5C series of logic circuits are produced in the Company's advanced 0.6 micron CMOS technology. The PI5C16244 and PI5C162244 are 16-bit, 4-port bus switches that are pin compatible with the 74 series 16244 16-bit driver. Four enable signals (nBE) turn the switches on similar to the enable signals of the 16244. The bus switch creates no additional propagation delay or ground bounce noise. The PI5C162244 device has a built-in 25-ohm series resistor to reduce noise because of reflections, thus eliminating the need for an external terminating resistor.
Logic Block Diagram
1BE 3BE
Product Pin Configuration
1BE 1B0
1A0 1A1 1A2 1A3
1B0 1B1 1B2 1B3
3A0 3A1 3A2 3A3
3B0 3B1 3B2 3B3
1B1
GND
1B2 1B3
VCC
2B0 2B1
GND
2BE 4BE
2B2 2B3
2A0 2A1 2A2 2A3
2B0 2B1 2B2 2B3
4A0 4A1 4A2 4A3
4B0 4B1 4B2 4B3
3B0 3B1
GND
3B2 3B3
VCC
4B0 4B1
GND
Truth Table(1)
Function Disconnect Connect nBE H L nA0-7 Hi-Z nB0-7
4B2 4B3 4BE
1 48 2 47 3 46 4 45 5 44 6 43 7 42 8 41 9 40 10 39 48-PIN 11 A,V,B 38 12 37 13 36 14 35 15 34 16 33 17 32 18 31 19 30 20 29 21 28 22 27 23 26 24 25
2BE 1A0 1A1
GND
1A2 1A3
VCC
2A0 2A1
GND
2A2 2A3 3A0 3A1
GND
3A2 3A3
VCC
4A0 4A1
GND
4A2 4A3 3BE
Note: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance
Product Pin Description
Pin Name nBE nA0-nA7 nB0-nB7 I/O I I/O I/O Description Bus Output Enable (Active LOW) Bus A Bus B
122
PS7024B 09/17/96
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C16244/162244 16-BIT BUS SWITCH BUFFER
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 (Inputs & Vcc Only) ........... -0.5V to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) ....... -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 = -40C to +85C, VCC = 5V 10%)
Parameters Description VIH VIL IIH IIL IOZH VIK IOS VH RON Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current High Impedance Output Current Clamp Diode Voltage Short Circuit Current
(3)
Test 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 = -18 mA A (B) = 0V, B (A) = VCC VCC = Min., VIN = 0.0V, ION = 48 mA VCC = Min., VIN = 2.4V, ION = 15 mA 16244 162244 16244 162244
Min. 2.0 -0.5 -- -- -- -- 100 -- -- 20 -- 20
Typ.(2) -- -- -- -- -- -0.7 -- 150 5 28 10 35
Max. -- 0.8 1 1 1 -1.2 -- -- 7 40 15 48
Units V V A A A V mA mV
Input Hysteresis at Control Pins Switch On Resistance
(4)
Capacitance (TA = 25C, f = 1 MHz)
Parameters(5) CIN COFF CON Description Input Capacitance A/B Capacitance, Switch Off A/B Capacitance, Switch On Test Conditions VIN = 0V VIN = 0V VIN = 0V Typ. -- -- -- Max. 6 6 8 Units pF pF pF
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 = 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.
123
PS7024B 09/17/96
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C16244/162244 16-BIT BUS SWITCH BUFFER
Power Supply Characteristics
Parameters Description ICC ICC ICCD Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Supply Current per Input per MHz(4) Test Conditions(1) VCC = Max. VCC = Max. VCC = Max., A and B Pins Open nBE = GND Control Input Toggling 50% Duty Cycle VIN = GND or VCC VIN = 3.4V(3) Min. -- -- -- Typ(2) 0.1 -- -- Max. 3.0 2.5 0.25 Units A mA 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, +25C 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.
PI5C16244 Switching Characteristics over Operating Range
PI5C16244 Com.
(1)
Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ
Description Propagation Delay xAx to xBx Bus Enable Time XBE to xAx or xBx Bus Disable Time XBE to xAx or xBx
(2,3)
Conditions CL = 50 pF RL = 500
Min
Max
Unit
-- 1.5 1.5
0.25 5.6 5.2
ns ns ns
PI5C162244 Switching Characteristics over Operating Range
PI5C162244 Com.
Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ
Description Propagation Delay(2,3) xAx to xBx Bus Enable Time XBE to xAx or xBx Bus Disable Time XBE to xAx or xBx
Conditions(1) CL = 50 pF RL = 500
Min
Max
Unit
-- 1.5 1.5
1.25 5.6 5.2
ns ns ns
Notes: 1. See test circuit and wave forms. 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 0.25 ns for 50 pF 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. Pericom Semiconductor Corporation 2380 Bering Drive * San Jose, CA 95131 * 1-800-435-2336 * Fax (408) 435-1100 * http://www.pericom.com
124
PS7024B 09/17/96

▲Up To Search▲

Price & Availability of PI5C162244

	To Download PI5C162244 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .