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PI74ALVC162834FD
18-Bit Universal Bus Driver with 3-State Outputs
Product Features
PI74ALVC162834F is designed for low voltage operation, VCC = 2.3V to 3.6V Data inputs have clamp diodes to VCC Outputs have equivalent 26 series resistors Supports PC133 Registered DIMM Typical VOLP (Output Ground Bounce) < 0.8V at VCC = 3.3V, TA = 25C Typical VOHV (Output Voh Undershoot) < 2.0V at VCC = 3.3V, TA= 25C Industrial operation at 40C to +85C Packages available: 56-pin 240 mil wide plastic TSSOP (A) 56-pin 173 mil wide plastic TVSOP (K) 56-pin 300 mil wide plastic SSOP (V)
Product Description
Pericom Semiconductors PI74ALVC series of logic circuits are produced using the Companys advanced 0.5 micron CMOS technology, achieving industry leading speed. The 18-bit PI74ALVC162834FD universal bus driver is designed for 2.3V to 3.6V VCC operation. Data flow from A to Y is controlled by Output Enable (OE). The device operates in the transparent mode when LE is LOW. The A data is latched if CLK is held at a high or low logic level. If LE is HIGH, the A-bus is stored in the latch/flip-flop on the low-to-high transition of CLK. When OE is HIGH, the outputs are in the highimpedance state. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
Logic Block Diagram
OE CLK LE A1 27 30 28 54
1D C1 CLK 3 Y1
TO 17 OTHER CHANNELS
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Product Pin Description
Pin Name OE LE CLK A Y GND VCC Description Output Enable Input (Active LOW) Latch Enable (Active LOW) Clock Input Data Input Data Output Ground Power
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PI74ALVC162834FD 18-Bit Universal Bus Driver with 3-State Outputs
Truth Table(1)
Inputs OE H L L L L LE X L L H H H H CLK X X X H L A X L H L H X X Outputs Y Z L H L H Yo(2) Yo(3)
Product Pin Configuration
NC NC Y1 GND Y2 Y3 VCC Y4 Y5 Y6 GND Y7 Y8 Y9 Y10 Y11 Y12 GND Y13 Y14 Y15 VCC Y16 Y17 GND Y18 OE LE
L L
1 2 3 4 5 6 7 8 9 10 11 12 13 14 56-Pin 15 A,K,V 16 17 18 19 20 21 22 23 24 25 26 27 28
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
GND NC A1 GND A2 A3 VCC A4 A5 A6 GND A7 A8 A9 A10 A11 A12 GND A13 A14 A15 VCC A16 A17 GND A18 CLK GND
Notes: 1 H = High Signal Level L = Low Signal Level Z = High Impedance = Transition LOW-to-HIGH X = Irrelevant 2. Output level before the indicated steady-state input conditions were established, provided that CLK is HIGH before LE goes HIGH. 3. Output level before the indicated steady-state input conditions were established.
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PI74ALVC162834FD 18-Bit Universal Bus Driver with 3-State Outputs
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 Input Voltage Range, VIN ........................................ 0.5V to VCC +0.5V Output Voltage Range, VOUT ................................. 0.5V to VCC +0.5V DC Input Voltage ........................................................ 0.5V to +5.0V DC Output Current ................................................................... 100mA Power Dissipation ........................................................................ 1.0W
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 Conditions(1)
Parame te rs VCC VIH VIL VIN VOUT IOH De s cription Supply Voltage Input HIGH Voltage VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V 0 0 VCC = 2.3V High- level Output Current VCC = 2.7V VCC = 3.0V VCC = 2.3V IOL TA Low- level Output Current VCC = 2.7V VCC = 3.0V Operating Free- Air Temperature - 40 Te s t Conditions M in. 2.3 1.7 2.0 0.7 0.8 VCC VCC -6 -8 - 12 6 8 12 85 C mA V Typ. M ax. 3.6 Units
Input LOW Voltage Input Voltage Output Voltage
Note: 1. Unused control inputs must be held HIGH or LOW to prevent them from floating.
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PI74ALVC162834FD 18-Bit Universal Bus Driver with 3-State Outputs
DC Electrical Characteristics (Over the Operating Range, TA = 40C to +85C, VCC = 3.3V 10%)
Parame te r IOH = 100A IOH = 4mA VOH IOH = 6mA IOH = 8mA IOH = 12mA IOH = 100A IOH = 4mA VOL IOH = 6mA IOH = 8mA IOH = 12mA II IOZ ICC ICC VI = VCC or GND VO = VCC or GND VI = VCC or GND One input at VCC - 0.6V, Other inputs a VCCor GND VIL = 0.7V VIL = 0.7V VIL = 0.8V VIL = 0.8V VIL = 0.8V VIH =1.7V VIH =1.7V VIH =2.0V VIH =2.0V VIH =2.0V Conditions VCC(1) Min.. to Max. 2.3V 2.3V 3.0V 2.7V 3.0V Min.. to Max. 2.3V 2.3V 3.0V 2.7V 3.0V 3.6V 3.6V 3.6V 3V to 3.6V 3.3V 3.3V 3.3V 4.0 5.5 5.0 pF M in.(1) VCC - 0.2 1.9 1.7 2.4 2.0 2.0 0.2 0.4 0.55 0.55 0.6 0.8 5 5 40 750 V Typ.(2) M ax.(1) Units
CI Controls Inputs VI = VCC or GND Data Input CO Outputs VO = VCC or GND VO = VCC or GND
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device typ e. 2. Typical values are at VCC = 3.3V, +25C ambient and maximum loading. 3. For I/O ports, the IOZ includes the input leakage current.
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PI74ALVC162834FD 18-Bit Universal Bus Driver with 3-State Outputs
Timing Requirements over Operating Range
ALVC162834FD Parame te rs D e s cription VCC = 2.5 V 0.2V M in. fCLOCK tW Pulse Duration Clock frequency LE LO W CLK HIGH or LO W Data before CLK tSU Setup time Data before LE, CLK HIGH Data before LE, CLK LO W tH Hold time t/v(1) Data after CLK Data after LE, CLK HIGH or LO W Input Transition Rise or Fall 0 3.3 3.3 2.1 2.3 1.9 0.6 0.8 0 10 M ax. 150 VCC = 2.7V M in. 0 3.3 3.3 2.1 2.3 1.9 0.6 8 0 10 M ax. 150 VCC = 3.3V 0.3V M in. 0 3.3 3.3 1 1.9 1.5 0.6 0.9 0 10 ns/V ns M ax. 150 MHz Units
Note: 1. Unused control inputs must be held HIGH or LOW to prevent them from floating.
Switching Characteristics Over Operating Range(1)
Parame te rs fMAX tPD tPD tPD tEN tDIS A LE CLK OE OE Y Y Y Y Y From (Input) To (Output) VCC = 2.5V 0.2V M in. 150 1 1.3 1.4 1.4 1 5.2 6.0 6.8 6.3 4.4 M ax. VCC = 2.7V M in. 150 5 6.8 6.1 6.5 5.2 M ax. VCC = 3.3V 0.3V M in. 150 1 1.3 1.4 1.5 1.8 4.2 5.8 3.5 5.9 5.0 ns M ax. Units MHz
Notes: 1. Unused control inputs must be held HIGH or LOW to prevent them from floating.
Operating Characteristics, TA = 25C
Parame te rs CPD Power Dissipation Outputs Enabled Capacitance Outputs Disabled Te s t Conditions CL = 0pF, F = 10 MHz VCC = 2.5V 0.2V Typical 38 13 VCC = 3.3V 0.3V Typical 41 15 Units
pF
Pericom Semiconductor Corporation 2380 Bering Drive * San Jose, CA 95131 * 1-800-435-2336 * Fax (408) 435-1100 * http://www.pericom.com
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PS8475 04/25/00

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