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PI74ALVTC16240
16-Bit Buffer/Driver with 3-State Outputs
Product Features
PI74ALVTC family is designed for low voltage operation, VDD = 1.8V to 3.6V Supports Live Insertion 3.6V I/O Tolerant Inputs and Outputs Bus Hold High Drive, -32/64mA @ 3.3V www.DataSheet4U.com Uses patented noise reduction circuitry 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 173 mil wide plastic TVSOP (K) 48-pin 300 mil wide plastic SSOP (V)
Product Description
Pericom Semiconductors PI74ALVTC series of logic circuits are produced in the Companys advanced 0.35 micron CMOS technology, achieving industry leading speed. The PI74ALVTC16240 buffer/driver is designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The device can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. It provides inverting outputs and symmetrical active-low output-enable (OE) inputs. To ensure the high-impedance state during power up or power down, OE should be tied to Vdd through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The family offers both I/O Tolerant, which allows it to operate in mixed 1.8/3.6V systems, and Bus Hold, which retains the data inputs last state whenever the data input goes to high-impedance, preventing floating inputs and eliminating the need for pullup/ down resistors.
Logic Block Diagram
1
PS8353A
11/23/98
PI74ALVTC16240 16-Bit Buffer Driver With 3-State Outputs 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Product Pin Description
Pin Name nOE nAx nYx GND VCC Description 3-State Output Enable Inputs (Active LOW) Inputs 3-State Outputs Ground Power
Truth Table(1)
Inputs nOE L L H nAX H L X Outputs nYx L H Z
www.DataSheet4U.com
Notes: 1. H = High Signal Level L = Low Signal Level X = Don’t Care or Irrelevant Z = High Impedance
Product Pin Configuration
1OE 1Y1 1Y2
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 45 44 43 42 41 40
2OE 1A1 1A2
GND
1Y3 1Y4
GND
1A3 1A4
VCC
2Y1 2Y2
VCC
2A1 2A2
GND
2Y3 2Y4 3Y1 3Y2
48-PIN A48 K48 V48
39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
GND
2A3 2A4 3A1 3A2
GND
3Y3 3Y4
GND
3A3 3A4
VCC
4Y1 4Y2
VCC
4A1 4A2
GND
4Y3 4Y4 4OE
GND
4A3 4A4 3OE
2
PS8353A
11/23/98
PI74ALVTC16240 16-Bit Buffer Driver With 3-State Outputs 123456789012345678901234567890121234567890123456789012345678901212345678901234567890.