ETC PI74ALVCH16863A

PI74ALVCH16863
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18-Bit Transceiver with 3-State Outputs
Product Features
Product Description
· PI74ALVCH16863 is designed for low voltage operation
Pericom Semiconductor’s PI74ALVCH series of logic circuits are
produced in the Company’s advanced 0.5 micron CMOS technology,
achieving industry leading speed.
· 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
· Bus Hold retains last active bus state during 3-State,
eliminating the need for external pullup resistors
· Industrial operation at –40°C to +85°C
· Packages available:
– 56-pin 240 mil wide plastic TSSOP (A)
– 56-pin 300 mil wide plastic SSOP (V)
The PI74ALVCH16863 is an 18-bit noninverting transceiver designed
for synchronous communication between data buses. The controlfunction implementation minimizes external timing requirements.
The PI74ALCH16863 can be used as two 9-bit transceivers or one 18bit transceiver.They allow data transmission from the A bus to the
B bus or from the B bus to the A bus, depending on the logic level
at the output-enable (OEAB or OEBA) inputs.
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 capability
of the driver.
The PI74ALVCH16863 has “Bus Hold” which retains the data
input’s last state whenever the data input goes to high-impedance
preventing “floating” inputs and eliminating the need for pullup/
down resistors.
Logic Block Diagram
1OEBA
1OEAB
1A1
56
2OEBA
1
2OEAB
55
2
1B1
2A1
To Eight Other Channels
29
28
41
16
2B1
To Eight Other Channels
1
PS8312
08/04/98
PI74ALVCH16863
18-Bit
Transceiver
with
3-State Outputs
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Product Pin Description
Pin Name
OExx
Ax
Bx
GND
VCC
Truth Table(1)†
Description
Output Enable Input (Active LOW)
Data I/O
Data I/O
Ground
Power
Inputs
Output B
OEAB
OEBA
H
L
B data to A bus
L
H
A data to B bus
H
H
High Impedance
Note:
1. H = High Signal Level
L = Low Signal Level
Z = High Impedance
↑ = LOW-to-HIGH Transition
Product Pin Configuration
1OEAB
1B1
1B2
GND
1B3
1B4
VCC
1B5
1B6
1B7
GND
1B8
1B9
GND
GND
2B1
2B2
GND
2B3
2B4
2B5
VCC
2B6
2B7
GND
2B8
2B9
2OEAB
1
2
56
55
1OEBA
3
4
5
54
53
1A2
52
6
7
8
51
1A3
1A4
50
49
VCC
1A5
9
10
48
47
1A6
11
12
46
1A1
GND
1A7
GND
56-Pin 45
A, V 44
1A8
13
14
15
16
43
42
41
GND
17
18
40
39
19
20
21
38
37
36
2A3
22
23
24
35
34
33
VCC
2A6
25
26
32
31
GND
27
28
30
29
2A9
1A9
GND
2A1
2A2
GND
2A4
2A5
2A7
2A8
2OEBA
2
PS8312
08/04/98
PI74ALVCH16863
18-Bit
Transceiver
with
3-State Outputs
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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, 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 VCC +0.5V
Output Voltage Range, VOUT ..................................... –0.5V to VCC +0.5V
DC Input Voltage .......................................................... –0.5V to +5.0V
DC Output Current ................................................................... 100 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.
Recommended Operating Conditions(1)
Parame te rs
De s cription
Te s t Conditions
M in.
Typ.
M ax.
VCC
Supply Voltage
VIH
Input HIGH Voltage
VIL
Input LOW Voltage
VIN
Input Voltage
0
VCC
VOUT
Output Voltage
0
VCC
IOH
IOL
TA
Dt/Dv
High- level Output Current
Low- level Output Current
2.3
VCC = 2.3V to 2.7V
1.7
VCC = 2.7V to 3.6V
2.0
3.6
VCC = 2.3V to 2.7V
0.7
VCC = 2.7V to 3.6V
0.8
VCC = 2.3V
- 12
VCC = 2.7V
- 12
VCC = 3.0V
- 24
VCC = 2.3V
12
VCC = 2.7V
12
VCC = 3.0V
24
Operating Free- Air Temperature
Input Transition Rise or Fall
Units
V
mA
- 40
85
°C
0
10
ns/V
Note:
1. Unused control inputs must be held HIGH or LOW to prevent them from floating.
3
PS8312
08/04/98
PI74ALVCH16863
18-Bit
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
VCC(1)
M in.
Min. to Max.
VCC - 0.2
VIH = 1.7V
2.3V
2.0
VIH = 1.7V
2.3V
1.7
VIH = 2.0V
2.7V
2.2
VIH = 2.0V
3.0V
2.4
VIH = 2.0V
3.0V
2.0
Te s t Conditions
IOH = - 100 mA
IOH = - 6 MA
VOH
IOH = - 12 mA
IOH = - 24 MA
IOL = 100 mA
IOL = 6 mA
VOL
IOL = 12 MA
IOL = 24 mA
II
0.2
VIL = 0.7V
2.3V
0.4
VIL = 0.7V
2.3V
0.7
VIL = 0.8V
2.7V
0.4
VIL = 0.8V
3.0V
0.55
3.6V
±5
VI = VCC or GND
2.3V
VI = 1.7V
VI = 0.8V
3.0V
VI = 2.0V
CI
CIO
- 45
75
- 75
mA
3.6V
±500
IOZ(4)
VO = VCC or GND
3.6V
±10
ICC
VI = VCC or GND
3.6V
40
3V to 3.6V
750
DICC
Control Inputs
Data Inputs
A or B ports
One input at VCC - 0.6V,
Other inputs at VCC or GND
VI = VCC or GND
3.3V
VO = VCC or GND
3.3V
V
45
VI = 0 to 3.6V
IO = 0
Units
V
Min. to Max.
VI = 0.7V
II (Hold)(3)
Typ.(2) M ax.
3.5
pF
6
7.5
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. Bus Hold maximum dynamic current required to switch the input from one state to another.
4. For I/O ports, the IOZ includes the input leakage current.
4
PS8312
08/04/98
PI74ALVCH16863
18-Bit
Transceiver
with
3-State Outputs
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Switching Characteristics Over Operating Range(1)
From
(Input)
To
(Output)
tPD
A or B
tEN
tDIS
Parame te rs
VCC = 2.5V ± 0.2V
M in.(2)
M ax.
B or A
1.0
O EAB or
O EBA
A or B
O EAB or
O EBA
A or B
VCC = 2.7V
M in.(2)
VCC = 3.3V ± 0.V
M ax.
M in.(2)
M ax.
4.1
4
1
3.4
1.0
5.7
5.8
1.0
4.7
1.3
5.5
4.7
1.4
4.2
Units
ns
Notes:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
Operating Characteristics, TA = 25ºC
Parame te r
CPD Power Dissipation
Capacitance
Te s t Conditions
Outputs Enabled
Outputs Disabled
CL = 50pF,
f = 10 MHz
VCC = 2.5V ± 0.2V
VCC = 3.3V ± 0.3V
Typical
21
30
2
3
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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PS8312
08/04/98