PERICOM PI74ALVCHR162245

PI74ALVCHR162245
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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 26Ω series 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
2DIR
1OE
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
PI74ALVCHR162245
3.3V 16-Bit Bidirectional Transceiver
with 3-State Outputs
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Truth Table(1)
Product Pin Description
Pin Name
De s cription
Inputs
xO E
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
Outputs
xOE
xD IR
L
L
Bus B Data to Bus A
L
H
Bus A Data to Bus B
H
X
Z
Note:
1. H = High Voltage Level, X = Don't Care,
L = Low Voltage Level, Z = High Impedance
Maximum Ratings
Product Pin Configuration
(Above which the useful life may be impaired. For user guidelines, not tested.)
1DIR
1
48
1OE
1B0
2
47
1A0
1B1
GND
3
4
46
45
1A1
GND
1B2
5
44
1A2
1B3
VCC
6
43
7
42
1A3
VCC
1B4
8
41
1A4
1B5
40
39
1A5
GND
9
10
GND
1B6
11
38
1A6
1B7
12
37
1A7
2B0
13
36
2A0
2B1
14
15
35
34
2A1
16
17
33
32
18
31
30
29
2A4
2B5
19
20
GND
21
28
GND
2B6
22
27
2A6
2B7
23
24
26
25
2A7
GND
2B2
2B3
VCC
2B4
2DIR
48-PIN
V48
A48
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.
GND
2A2
2A3
VCC
2A5
2OE
2
PS8343
10/09/98
PI74ALVCHR162245
3.3V 16-Bit Bidirectional Transceiver
with 3-State Outputs
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DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 3.3V ± 10%)
Parame te rs
De s cription
VCC
Supply Voltage
VIH(3)
Input HIGH Voltage
VIL(3)
Input LOW Voltage
Te s t Conditions (1)
M in.
Typ.(2)
2.3
VCC = 2.3V to 2.7V
1.7
VCC = 2.7V to 3.6V
2.0
M ax.
VCC = 2.3V to 2.7V
0.7
VCC = 2.7V to 3.6V
0.8
VIN(3)
Input Voltage
0
VCC
VOUT(3)
Output Voltage
0
VCC
IOH = - 100 µA, 2.3V to 3.6V
VOH
Output HIGH Voltage
Vcc - 0.2
VIH = 1.7V
2.3V
1.9
VIH = 2V
2.7V
2.2
VIH = 1.7V
2.3V
1.7
VIH = 2V
3V
2.4
IOH = - 8mA
VIH = 2V
2.7V
2
IOH = - 12mA
VIH = 2V
3V
2
IOH = - 4mA
IOH = - 6mA
V
IOL = 100µA, 2.3V to 3.6V
VOL
Output LOW Voltage
0.2
VIL = 0.7V
2.3V
0.4
VIH = 2V
2.7V
0.4
VIL = 0.7V
2.3V
0.55
VIL = 0.8V
3V
0.55
IOL = 8mA
VIL = 0.8V
2.7V
0.6
IOL = 12mA
VIL = 0.8V
3V
0.8
IOL = 4mA
IOL = 6mA
VCC = 2.3V
IOH(3)
IOL(3)
IIN
IIN (HOLD)
Output HIGH Current
Output LOW Current
Input Current
Input
Hold
Current
Units
3.6
-6
VCC = 2.7V
-8
VCC = 3.0V
- 12
VCC = 2.3V
6
VCC = 2.7V
8
VCC = 3.0V
12
VIN = VCC or GND, VCC = 3.6V
±5
VIN = 0.7V, VCC = 2.3V
45
VIN = 1.7V, VCC = 2.3V
- 45
VIN = 0.8V, VCC = 3.0V
75
VIN = 2.0V, VCC = 3.0V
- 75
VIN = 0 to 3.6V, VCC = 3.6V
±500
IOZ
Output Current
(3- State Outputs)
VOUT = VCC or GND,
VCC = 3.6V
±10
Icc
Supply Current
VCC = 3.6V, IOUT = 0µA,
VIN = GND or VCC
40
∆Icc
Supply Current per Input @
TTL HIGH
VCC = 3.0V to 3.6V
One Input at VCC - 0.6V
Other Inputs at VCC or GND
750
CI
Control Inputs
VIN = VCC or GND, VCC = 3.3V
4
CIO
A or B Ports
VO = VCC or GND, VCC = 3.3V
9
mA
µA
pF
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at Vcc = 3.3V, +25°C ambient and maximum loading.
3. Unused Control Inputs must be held HIGH or LOW to prevent them from floating.
3
PS8343
10/09/98
PI74ALVCHR162245
3.3V 16-Bit Bidirectional Transceiver
with 3-State Outputs
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Switching Characteristics over Operating Range(1)
Parame te rs
From
(INPUT)
tPD
A or B
tEN
OE
tDIS
OE
To
(OUTPUT)
B or A
VCC = 2.5V ± 0.2V
M in.(2)
M ax.
1.0
VCC = 2.7V
M in.(2)
VCC = 3.3V ± 0.3V
M ax.
M in.(2)
M ax.
4.9
4.7
1.0
4.2
1.0
6.8
6.7
1.0
5.6
1.0
6.3
5.7
1.0
5.5
0
10
10
0
10
Units
ns
D e s cription
∆t/∆v(3)
Input Transition Rise or Fall
0
ns/V
Notes:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. Recommended operating condition.
Operating Characteristics, TA = 25°C
Parame te rs
Cpd Power
Dissipation Capacitance
O utputs Enabled
O utputs Disabled
Te s t
Conditions
VCC = 2.5V ± 0.2V
VCC = 3.3V ± 0.3V
Typ.
Typ.
CL = 50pF,
f = 10 MHz
24
32
4
5
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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PS8343
10/09/98