21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
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2109876543212109876543210987654321098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74ALVCH162244
16-Bit Buffer Driver
with 3-State Outputs
Product Features
•
•
•
•
•
•
•
•
•
PI74ALVCH162244 is designed for low-voltage operation
V
CC
= 2.3V to 3.6V
Hysteresis on all inputs
Typical V
OLP
(Output Ground Bounce)
< 0.8V at V
CC
= 3.3V, T
A
= 25°C
Typical V
OHV
(Output V
OH
Undershoot)
< 2.0V at V
CC
= 3.3V, T
A
= 25°C
Output ports have equivalent 26-Ohm series resistors:
no external resistors are required
Bus Hold retains last active bus state during 3-State,
eliminating the need for external pullup resistors
Industrial operation: –40°C to +85°C
Packages available:
– 48-pin 240 mil wide plastic TSSOP (A)
– 48-pin 300 mil wide plastic SSOP (V)
Product Description
Pericom Semiconductor’s PI74ALVCH series of logic circuits
are produced using the Company’s advanced 0.5 micron CMOS
technology, achieving industry leading speed.
The PI74ALVCH162244 is an non-inverting 16-bit buffer/driver
designed for low voltage 2.3V to 3.6V V
CC
operation.
The 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 non-inverting outputs and symmetri-
cal active-low output-enable (OE) inputs.
To ensure the high-impedance state during power up or power
down, OE should be tied to V
CC
through a pullup resistor in which
the minimum value is determined by the current-sinking capability
of the driver.
The PI74ALVCH162244 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
1OE
1A0
1A1
1A2
1A3
1Y0
1Y1
1Y2
1Y3
3OE
3A0
3A1
3A2
3A3
3Y0
3Y1
3Y2
3Y3
2OE
2A0
2A1
2A2
2A3
2Y0
2Y1
2Y2
2Y3
4OE
4A0
4A1
4A2
4A3
4Y0
4Y1
4Y2
4Y3
1
PS8092B
10/15/01
321098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74ALVCH162244
16-Bit Buffer Driver
with 3-State Outputs
Product Pin Description
Pin Name
OE
Ax
Yx
GND
V
CC
De s cription
3- State Output Enable Inputs (Active LOW)
Inputs
3- State Outputs
Ground
Power
Truth Table
(1)
Inputs
OE
L
L
H
Ax
H
L
X
Outputs
Yx
H
L
Z
Product Pin Configuration
1OE
1Y1
1Y2
GND
1Y3
1Y4
VCC
2Y1
2Y2
GND
2Y3
2Y4
3Y1
3Y2
GND
3Y3
3Y4
VCC
4Y1
4Y2
GND
4Y3
4Y4
4OE
1
2
3
4
5
6
7
8
9
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
2OE
1A1
1A2
GND
1A3
1A4
VCC
2A1
2A2
GND
2A3
2A4
3A1
3A2
GND
3A3
3A4
VCC
4A1
4A2
GND
4A3
4A4
3OE
Notes:
1. H = High Signal Level
L = Low Signal Level
X = Don't Care or Irrelevant
Z = High Impedance
48-Pin
A, V
11
10
12
13
14
15
16
17
18
19
20
21
22
23
24
2
PS8092B
10/15/01
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74ALVCH162244
16-Bit Buffer Driver
with 3-State Outputs
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, V
IN ............................................
–0.5V to V
CC
+0.5V
Output Voltage Range, V
OUT .....................................
–0.5V to V
CC
+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.
DC Electrical Characteristics
(Over the Operating Range, T
A
= –40°C to +85°C, V
CC
= 3.3V ±10%)
Parame te rs
V
CC
V
IH(3)
V
IL(3)
V
IN(3)
V
OUT(3)
De s cription
Supply Voltage
Input HIGH Voltage
V
CC
= 2.3V to 2.7V
V
CC
= 2.7V to 3.6V
V
CC
= 2.3V to 2.7V
V
CC
= 2.7V to 3.6V
0
0
I
OH
= –100
µ
A, V
CC
= Min. to Max.
V
IH
= 1.7V, I
OH
= –4mA, V
CC
= 2.3V
V
OH
Output
HIGH
Voltage
V
IH
= 1.7V, I
OH
= –6mA, V
CC
= 2.3V
V
IH
= 2.0V, I
OH
= –6mA, V
CC
= 2.3V
V
IH
= 2.0V, I
OH
= –8mA, V
CC
= 2.7V
V
IH
= 2.0V, I
OH
= –12mA, V
CC
= 3.0V
I
OL
= 100
µ
A, V
IL
= Min. to Max.
V
OL
Output
LOW
Voltage
V
IL
= 0.7V, I
OL
= 4mA, V
CC
= 2.3V
V
IL
= 0.7V, I
OL
= 6mA, V
CC
= 2.3V
V
IL
= 0.8V, I
OL
= 6mA, V
CC
= 3.0V
V
IL
= 0.8V, I
OL
= 12mA, V
CC
= 3.0V
I
OH(3)
Output
HIGH
Current
Output
LOW
Current
V
CC
= 2.3V
V
CC
= 2.7V
V
CC
= 3.0V
V
CC
= 2.3V
V
CC
= 2.7V
V
CC
= 3.0V
V
CC
- 0.2
1. 9
1. 7
2.4
2.0
2.0
0.2
0.4
0.55
0.55
0.8
–6
–8
–12
6
8
12
mA
V
Te s t Conditions
(1)
M in.
2.3
1.7
2.0
0.7
0.8
V
CC
V
CC
Typ.
(2)
M ax.
3.6
Units
Input LOW Voltage
Input Voltage
Output Voltage
I
OL(3)
3
PS8092B
10/15/01
321098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74ALVCH162244
16-Bit Buffer Driver
with 3-State Outputs
DC Electrical Characteristics-
Continued
(Over the Operating Range, T
A
= –40°C to +85°C, V
CC
= 3.3V ±10%)
Parame te rs
I
IN
De s cription
Input Current
Te s t Conditions
(1)
V
IN
= V
CC
or GND, V
CC
= 3.6V
V
IN
= 0.7V, V
CC
= 2.3V
Input
Hold
Current
V
IN
= 1.7V, V
CC
= 2.3V
V
IN
= 0.8V, V
CC
= 3.0V
V
IN
= 2.0V, V
CC
= 3.0V
V
IN
= 0 to 3.6V, V
CC
= 3.6V
I
OZ
I
CC
∆I
CC
Output Current (3- State Outputs)
Supply Current
Supply Current per Input
@ TTL HIGH
Control Inputs
Data Inputs
Outputs
V
OUT
= V
CC
or GND, V
CC
= 3.6V
V
CC
= 3.6V, I
OUT
= 0
µ
A,
V
IN
= GND or V
CC
V
CC
= 3.0V to 3.6V
One Input at V
CC
- 0.6V
Other Inputs at V
CC
or GND
V
IN
= V
CC
or GND, V
CC
= 3.3V
V
O
= V
CC
or GND, V
CC
= 3.3V
3.5
6
7
pF
45
–45
75
–75
±500
±10
40
µA
M in.
Typ.
(2)
M ax.
±5
Units
I
IN
(
HOLD
)
750
C
I
C
O
Notes:
1. For cMax. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 3.3V, +25°C ambient and maximum loading.
3. Unused Control Inputs must be held HIGH or LOW to prevent them from floating.
Switching Characteristics over Operating Range
(1)
Parame te rs
t
PD
t
EN
t
DIS
∆
t/
∆v
(3)
From (Input)
A
OE
OE
Description
Input Transition Rise or Fall
0
10
0
10
0
10
ns/V
To (Output)
Y
Y
Y
V
CC
= 2.5V ±0.2V
M in.
(2)
1.0
1.0
1.0
M ax.
4.9
6.8
6.3
V
CC
= 2.7V
M in.
(2)
M ax.
4.7
6.7
5.7
V
CC
= 3.3V ±0.3V
M in.
(2)
1.0
1. 0
1. 0
M ax.
4.2
5.6
5.5
ns
Units
Notes:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. Recommended operating condition.
Operating Characteristics, T
A
= 25ºC
Parame te r
Outputs Enabled
Outputs Disabled
Te s t
Conditions
C
L
= 50pF,
f = 10 MHz
V
CC
= 2.5V ±0.2V
V
CC
= 3.3V ±0.3V
Units
Typical
16
4
18
6
pF
C
PD
Power Dissipation Capacitance
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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PS8092B
10/15/01
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