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Part: PI74VCX16245
Category:
Logic
-> Bus Interface
-> Bus Oriented Circuits
Description: 16-Bit Bidirectional Transceiver W/3-State
Company: Pericom Semiconductor Corporation
Datasheet: Download PI74VCX16245 datasheet File size : 31 kB
Request For quote: Find where to buy PI74VCX16245
Datasheet text preview:
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74VCX16245
2.5V 16-Bit Bidirectional Transceiver with 3-State Outputs
Product Features
· The PI74VCX family is designed for low voltage operation VDD = 1.8V to 3.6V · 3.6V I/O Tolerant Inputs and Outputs · Supports Live Insertion · Balanced output drive, ±24mA · Uses patented Noise Reduction Circuitry · Typical VOLP (Output Ground Bounce) < 0.6V at VDD = 2.5V, TA = 25ºC · Typical VOHV (Output VOH Undershoot) < -0.6V at VDD = 2.5V, TA = 25ºC · Power-Off High Impedance inputs and outputs · Industrial operation at 40°C to +85°C · Packages available: 48-pin 240 mil. wide plastic TSSOP (A) 48-pin 300 mil. wide plastic SSOP (V)
Product Description
Pericom Semiconductors PI74VCX series of logic circuits are produced in the Companys advanced 0.35 micron CMOS technology, achieving industry leading speed. The PI74VCX16245 is a 16-bit bidirectional transceiver designed for asynchronous two-way communication between data buses. The direction control input pin (xDIR) determines the direction of data flow through the bidirectional transceiver. The Direction and Output Enable controls are designed to operate this device as either two independent 8-bit transceivers or one 16-bit transceiver. The output enable (OE) input, when HIGH, disables both A and B ports by placing them in HIGH Z condition. To ensure the high-impedance state during power up or power down, OE should be tied to Vcc through a pull-up resistor; the minimum value of the resistor is determined by the current sinking ability of the driver. The PI74VCX family is I/O Tolerant, allowing it to operate in mixed 1.8V/3.6V systems.
Logic Block Diagram
1DIR 1OE 1A0 1B0 1A1 1B1 1A2 1B2 1A3 1B3 1A4 1B4
1A5 2A6 2A5 2B4 2 A4 2B3 2A3 2B2 2A1
2B1 2DIR
2OE
2A0 2B0
1B5 1A6 1B6 1A7 1B7
2A8 2A7
2B5
2B6
2B7
1
PS8325
09/14/98
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74VCX16245 2.5V 16-Bit Bidirectional Transceiver with 3-State Outputs
Truth Table(1)
Product Pin Description
Pin Name xO E xDIR xAx xBx GND VCC D e s cription 3- STATE O utput Enable Inputs (Active LO W) Direction Control Input Side A Inputs or 3- STATE Inputs Side B Inputs or 3- STATE O utputs Ground Power
Inputs (1) xOE L L H xDIR L H X
Outputs (1) Bus B Data to Bus A Bus A Data to Bus B High Z State
Notes: 1. H = High Signal Level L = Low Signal Level X = Don't Care or Irrelevant Z = High Impedance
Product Pin Configuration
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46
1DIR 1B0 1B1 GND 1B2 1B3 VCC 1B4 1B5 GND 1B6 1B7 2B0 2B1 GND 2B2 2B3 VCC 2B4 2B5 GND 2B6 2B7 2DIR
1OE 1A0 1A1 GND 1A2 1A3 VCC 1A4 1A5 GND 1A6 1A7 2A0 2A1 GND 2A2 2A3 VCC 2A4 2A5 GND 2A6 2A7 2OE
48-PIN A48 V48
45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
2
PS8325
09/14/98
PI74VCX16245 2.5V 16-Bit Bidirectional Transceiver with 3-State Outputs
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Supply Voltage Range, VDD ...... 0.5V to 4.6V Input Voltage Range, VI ......... -0.5V to 4.6V Output Voltage Range, VO (3-Stated) .. -0.5V to 4.6V Output Voltage Range, VO(1) (Active) ... 0.5V to VDD + 0.5V DC Input Diode Current (IIK) VI VDD ........... -50mA DC Output Source/Sink Current (IOH/IOL) .... ±50mA DC VDD or GND Current per Supply Pin (ICC or GND) .... ±100mA Storage Temperature Range, TSTG .... 65°C to150°C
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 f o r extended periods may affect reliability.
Recommended Operating Conditions(2)
Parame te rs VDD VI VO Supply voltage Input voltage Output voltage Active State Off State VDD = 3.0V to 3.6V VDD = 2.3V to 2.7V VDD = 1.8V 0 -40 De s cription Operating Data Retention Only M in. 1.8 1.2 - 0.3 0 0 M ax. 3.6 3.6 3.6 VDD 3.6 ±24 ±18 ±6 10 85 mA ns/V ºC V Units
Output current in IOH/IOL Dt/Dv TA
Input transistion rise or fall rate(3) Operating free- air temperature
Notes: 1. Absolute maximum of IO must be observed 2. Unused control inputs must be held HIGH or LOW to prevent them from floating 3. As measured between 0.8V and 2.0V, VDD = 3.0V
3
PS8325
09/14/98
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