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PI74ALVTC16245K Datasheet

  • PI74ALVTC16245K

  • 16-Bit BiDirectional Transceiver with 3-State Outputs

  • 10頁

  • PERICOM   PERICOM

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PI74ALVTC16245
16-Bit BiDirectional Transceiver
with 3-State Outputs
Features
鈥?PI74ALVTC family is designed for low voltage operation,
V
DD
= 1.8V to 3.6V
鈥?Supports Live Insertion
鈥?3.6V I/O Tolerant Inputs and Outputs
鈥?Bus Hold
鈥?High Drive, -32/64mA @ 3.3V
鈥?Uses patented noise reduction circuitry
鈥?Power-off high impedance inputs and outputs
鈥?Industrial operation at 鈥?0擄C to +85擄C
鈥?Packaging (Pb-free & Green available):
鈥?48-pin 240- mil wide plastic TSSOP (A)
鈥?48-pin 173-mil wide plastic TVSOP (K)
鈥?48-pin 300-mil wide plastic SSOP (V)
Description
Pericom Semiconductor鈥檚 PI74ALVTC16245 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 Hi-Z condition.
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 鈥淏us Hold,鈥?which retains the data
input鈥檚 last state whenever the data input goes to high-impedance,
preventing 鈥渇loating鈥?inputs and eliminating the need for pullup/
down resistors.
Block Diagram
1DIR
1OE
1A
0
1B
0
1A
1
1B
1
1A
2
1B
2
1A
3
1B
3
1A
4
1B
4
1
A
5
2
A
6
2
A
5
2
B
4
2
A
4
2
B
3
2
A
3
2
B
2
2
A
1
2
B
1
2
DIR
2
OE
2
A
0
2
B
0
1B
5
1A
6
1B
6
1A
7
1B
7
2
A
8
2
A
7
2
B
5
2
B
6
2
B
7
1
PS8354B
09/22/04

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