ETC PI74ALVCH16244V

PI74ALVCH16244
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16-Bit Buffer Driver
with 3-State Outputs
Product Features
Product Description
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Pericom Semiconductor’s PI74ALVCH series of logic circuits
are produced using the Company’s advanced 0.5 micron CMOS
technology, achieving industry leading speed.
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PI74ALVCH16244 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
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:
– 48-pin 240 mil wide plastic TSSOP (A)
– 48-pin 300 mil wide plastic SSOP (V)
The PI74ALVCH16244 is an non-inverting 16-bit buffer/driver
designed for low-voltage 2.3V to 3.6V VCC 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 inverting outputs and symmetrical
active-low output-enable (OE) inputs.
To ensure the high-impedance state during power up or power
down, OE should be tied to VCC through a pullup resistor in which
the minimum value is determined by the current-sinking capability
of the driver.
The PI74ALVCH16244 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
1A1
1A2
1A3
1A4
2OE
2A1
2A2
2A3
2A4
1
3OE
47
2
46
3
44
5
43
6
1Y1
3A1
1Y2
3A2
1Y3
3A3
1Y4
3A4
48
4OE
41
8 2Y1
40
9
38
11
37
12
4A1
2Y2
4A2
2Y3
4A3
2Y4
4A4
1
25
36
13
35
14
33
16
32
17
3Y1
3Y2
3Y3
3Y4
24
30
19
29
20
27
22
26
23
4Y1
4Y2
4Y3
4Y4
PS8087B
07/28/00
PI74ALVCH16244
16-Bit Buffer Driver with 3-State Outputs
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Product Pin Description
Pin Name
nOE
nAx
nYx
GND
VCC
Truth Table(1)
Description
3-State Output Enable Inputs (Active LOW)
Inputs
3-State Outputs
Ground
Power
Inputs
nOE
nAx
nYx
L
H
H
L
L
L
H
X
Z
Notes:
1. H = High Signal Level
L = Low Signal Level
X = Don't Care or Irrelevant
Z = High Impedance
Product Pin Configuration
1OE
1
48
2OE
1 Y1
2
47
1A 1
1 Y2
3
46
1A2
GND
4
45
GND
1 Y3
5
44
1A 3
1 Y4
6
43
1A4
VCC
7
42
VCC
2 Y1
8
41
2A1
2 Y2
9
40
2A2
48-Pin
A,V
Outputs
GND
10
39
GND
2 Y3
11
38
2A3
2 Y4
12
37
2A4
3 Y1
13
36
3A1
3 Y2
14
35
3A2
GND
15
34
GND
3 Y3
16
33
3A3
3 Y4
17
32
3A4
VCC
18
31
VCC
4 Y1
19
30
4A1
4 Y2
20
29
4A2
GND
21
28
GND
4 Y3
22
27
4A3
4 Y4
23
26
4A4
4OE
24
25
3OE
2
PS8087B
07/28/00
PI74ALVCH16244
16-Bit
Buffer
Driver
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 ............................................................................... 100mA
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, TA = –40°C to +85°C, VCC = 3.3V ±10%)
Te s t Conditions (1)
D e s cription
VCC
Supply Voltage
VIH(3)
Input HIGH Voltage
VIL(3)
Input LO W Voltage
VIN(3)
Input Voltage
0
VCC
VOUT(3)
O utput Voltage
0
VCC
VOH
VOL
IOH(3)
IOL(3)
O utput
HIGH
Voltage
O utput
LO W
Voltage
O utput
HIGH
Current
O utput
LO W
Current
M in.
Typ.(2)
Parame te rs
2.3
VCC = 2.3V to 2.7V
1.7
VCC = 2.7V to 3.6V
2.0
M ax.
3.6
VCC = 2.3V to 2.7V
0.7
VCC = 2.7V to 3.6V
0.8
IOH = –100µA, VCC = Min. to Max.
VCC - 0.2
VIH = 1.7V, IOH = –6mA, VCC = 2.3V
2.0
VIH = 1.7V, IOH = –12mA, VCC = 2.3V
1.7
VIH = 2.0V, IOH = –12mA, VCC = 2.7V
2.2
VIH = 2.0V, IOH = –12mA, VCC = 3.0V
2.4
VIH = 2.0V, IOH = –24mA, VCC = 3.0V
2.0
V
IOL = 100µA, VIL = Min. to Max.
0.2
VIL = 0.7V, IOL = 6mA, VCC = 2.3V
0.4
VIL = 0.7V, IOL = 12mA, VCC = 2.3V
0.7
VIL = 0.8V, IOL = 12mA, VCC = 2.7V
0.4
VIL = 0.8V, IOL = 24mA, VCC = 3.0V
0.55
VCC = 2.3V
–12
VCC = 2.7V
–12
VCC = 3.0V
–24
VCC = 2.3V
12
VCC = 2.7V
12
VCC = 3.0V
24
3
Units
PS8087B
mA
07/28/00
PI74ALVCH16244
16-Bit Buffer Driver with 3-State Outputs
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DC Electrical Characteristics-Continued (Over the Operating Range, TA = –40°C to +85°C, VCC = 3.3V ±10%)
Parame te rs
D e s cription
IIN
Input Current
Te s t Conditions (1)
Typ.(2)
M ax.
VIN = VCC or GND, VCC = 3.6V
Input
Hold
Current
IIN (HOLD)
M in.
±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
O utput Current (3- State O utputs)
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
O ne Input at VCC - 0.6V
O ther Inputs at VCC or GND
750
CI
Control Inputs
CO
O utputs
µA
3
VIN = VCC or GND, VCC = 3.3V
Data Inputs
Units
6
VO = VCC or GND, VCC = 3.3V
pF
7
Notes:
1. For conditions shown as Max. or Min., 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.
Switching Characteristics over Operating Range(1)
Parame te rs
From (INPUT)
To (OUTPUT)
tPD
A
tEN
tDIS
VCC = 2.5V ± 0.2V
M in.(2)
M ax.
Y
1.0
OE
Y
OE
Y
VCC = 2.7V
M in.(2)
VCC = 3.3V ± 0.3V
M ax.
M in.(2)
M ax.
3.7
3.6
1.0
3.0
1.0
5.7
5.4
1.0
4.4
1.0
5.2
4.6
1.0
4.1
0
10
10
0
10
Units
ns
De 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 = 25ºC
Parame te r
CPD Power Dissipation
Capacitance
Te s t Conditions
O utputs Enabled
O utputs Disabled
CL = 50pF
f = 10 MHz
VCC = 2.5V ± 0.2V
VCC = 3.3V ± 0.3V
Typical
16
19
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
4
PS8087B
07/28/00