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Pericom Semiconductor Corporation

PI74ALVCHR162245 Datasheet Preview

PI74ALVCHR162245 Datasheet

3.3V 16-Bit Bidirectional Transceiver with 3-State Output

No Preview Available !

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3.3V 16-Bit Bidirectional Transceiver
with 3-State Output
Product Features
Product Description
• PI74ALVCHR162245 is designed for low voltage operation
• Vcc = 2.3V to 3.6V
• Hysteresis on all inputs
• Typical VOLP (Output Ground Bounce)
< 0.8V at VCC = 3.3V, TA = 25°C
• Typical VOHV (Output VOH Undershoot)
< 2.0V at VCC = 3.3V, TA = 25°C
• All output ports have equivilent 26series resistors:
No external resistors are required
• Bus Hold retains last active bus state during 3-state
eliminating the need for external pull-up resistors
• 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)
Pericom Semiconductor’s PI74ALVCH series of logic circuits are
produced using the Company’s advanced 0.5 micron CMOS
technology to achieve industry-leading speed grades.
The PI74ALVCHR162245 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.
Active bus-hold circuitry is provided to hold unused or floating
data inputs at a valid logic level.
Logic Block Diagram
1DIR
1OE
2DIR
2OE
1A0 2A0
1B0 2B0
1A1 2A1
1B1 2B1
1A2 2A2
1B2 2B2
1A3 2A3
1B3 2B3
1A4 2A4
1B4 2B4
1A5 2A5
1B5 2B5
1A6 2A6
1B6 2B6
1A7 2A7
1B7 2B7
1
PS8343
10/09/98




Pericom Semiconductor Corporation

PI74ALVCHR162245 Datasheet Preview

PI74ALVCHR162245 Datasheet

3.3V 16-Bit Bidirectional Transceiver with 3-State Output

No Preview Available !

PI74ALVCHR162245
3.3V 16-Bit Bidirectional Transceiver
1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456w78i9t0h12334-5S67t8a90t1e21O23u45t6p78u9t0s12
Product Pin Description
Pin Name Description
xOE 3-State Output Enable Inputs (Active LOW)
xDIR
Direction Control Input
XAX Side A Inputs or 3-State Inputs
XBX Side B Outputs or 3-State Outputs
GND Ground
VCC Power
Truth Table(1)
Inputs
xOE xDIR
Outputs
L L Bus B Data to Bus A
L H Bus A Data to Bus B
HX
Z
Note:
1. H = High Voltage Level, X = Don't Care,
L = Low Voltage Level, Z = High Impedance
Product Pin Configuration
1DIR
1B0
1B1
GND
1B2
1B3
VCC
1B4
1B5
GND
1B6
1B7
2B0
2B1
GND
2B2
2B3
VCC
2B4
2B5
GND
2B6
2B7
2DIR
1 48
2 47
3 46
4 45
5 44
6 43
7 42
8 41
9 40
10 39
11 48-PIN 38
12
V48
A48
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
1OE
1A0
1A1
GND
1A2
1A3
VCC
1A4
1A5
GND
1A6
1A7
2A0
2A1
GND
2A2
2A3
VCC
2A4
2A5
GND
2A6
2A7
2OE
Maximum Ratings
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature ............................................. –65°C to +150°C
Ambient Temperature with Power Applied ........... –40°C to +85°C
Input Voltage Range, VIN ........................................ –0.5V to +4.6V
Output Voltage Range, VOUT .......................... –0.5V to VCC +0.5V
DC Input Voltage ..................................................... –0.5V to +5.0V
DC Output Current ................................................................. 50 mA
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.
2
PS8343
10/09/98


Part Number PI74ALVCHR162245
Description 3.3V 16-Bit Bidirectional Transceiver with 3-State Output
Maker Pericom Semiconductor Corporation
Total Page 4 Pages
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Pericom Semiconductor Corporation





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