ETC PI74ALVCH162827A

PI74ALVCH162827
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20-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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PI74ALVCH162827 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
Output ports have equivalent 26Ω 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 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 PI74ALVCH162827 is a 20-bit non-inverting buffer/driver
designed for 2.3V to 3.6V VCC operation.
The buffer/driver is composed of two 10-bit sections with separate
output-enable signals. For either 10-bit buffer section, the two
output-enable (1OE1 and 1OE2 or 2OE1 and 2OE2) inputs must
both be low for the corresponding Y outputs to be active. If either
output-enable input is HIGH, the outputs of that 10-bit buffer
section are in the high-impedance state.
The outputs, which are designed to sink up to 12mA, include 26Ω
resistors to reduce overshoot and undershoot.
To ensure the high-impedance state during power up or power
down, OE should be tied to VCC through a pullup resistor; the
minimum value of the resistor is determined by the current-sinking
capability of the driver.
The PI74ALVCH162827 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
1OE1
1OE2
1A1
1
2 OE1
56
55
2OE2
2
1Y1
2A1
28
29
42
15
2Y1
To 9 Other Channels
To 9 Other Channels
1
PS8095B 10/07/98
PI74ALVCH162827
20-Bit Buffer Driver with 3-State Outputs
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Product Pin Description
Pin Name
OE
Ax
Yx
GND
VCC
Truth Table(1)
Description
Output Enable Input (Active LOW)
Data Inputs
3-State Outputs
Ground
Power
Inputs
Outputs
OE1
OE2
A
Y
L
L
L
L
L
L
H
H
H
X
X
Z
X
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
1OE1
1Y1
1Y2
GND
1Y3
1Y4
VCC
1Y5
1Y6
1Y7
GND
1Y8
1Y9
1Y10
2Y1
2Y2
2Y3
GND
2Y4
2Y5
2Y6
VCC
2Y7
2Y8
GND
2Y9
2Y10
2OE1
1
2
56
55
1OE2
3
4
5
54
53
52
1A2
GND
6
7
8
51
50
49
1A4
9
10
48
47
1A6
1A7
11
12
13
46
GND
56-Pin 45
A, V 44
14
15
16
43
42
41
1A10
17
18
40
39
2A3
19
20
21
38
37
36
2A4
22
23
24
35
34
33
25
26
32
31
GND
27
28
30
29
2A10
2OE2
1A1
1A3
VCC
1A5
1A8
1A9
2A1
2A2
GND
2A5
2A6
VCC
2A7
2A8
2A9
2
PS8095B 10/07/98
PI74ALVCH162827
20-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 +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.
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 = - 100mA, VCC = Min. to Max.
VCC - 0.2
VIH = 1.7V, IOH = - 4mA, VCC = 2.3V
1.9
VIH = 1.7V, IOH = - 6mA, VCC = 2.3V
1.7
VIH = 2.0V, IOH = - 6mA, VCC = 2.7V
2.4
VIH = 2.0V, IOH = - 8mA, VCC = 3.0V
2.0
VIH = 2.0V, IOH = - 12mA, VCC = 3.0V
2.0
V
IOL = 100mA, VIL = Min. to Max.
0.2
VIL = 0.7V, IOL = 4mA, VCC = 2.3V
0.4
VIL = 0.7V, IOL = 6mA, VCC = 2.3V
0.55
VIL = 0.8V, IOL = 6mA, VCC = 2.7V
0.55
VIL = 0.8V, IOL = 12mA, VCC = 3.0V
0.8
VCC = 2.3V
-6
VCC = 2.7V
-8
VCC = 3.0V
- 12
VCC = 2.3V
6
VCC = 2.7V
8
VCC = 3.0V
12
3
Units
mA
PS8095B 10/07/98
PI74ALVCH162827
20-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%)
Te s t Conditions (1)
Parame te rs De s cription
IIN
Input Current
VIN = VCC or GND, VCC = 3.6V
Input
Hold
Current
IIN (HOLD)
Typ.(2)
M in.
M ax.
±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 = 0mA,
VIN = GND or VCC
40
DICC
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
Control Inputs
CI
Outputs
CO
mA
3.5
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
1.3
OE
Y
OE
Y
VCC = 2.7V
M in.(2)
VCC = 3.3V ±0.3V
M ax.
M in.(2)
M ax.
4.4
4.4
1.5
3.8
1.5
7.2
6.2
1.6
5.2
2.4
5.9
5.2
1.8
4.7
0
10
10
0
10
Units
ns
D e s cription
Dt/Dv(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
Outputs Enabled
Outputs Disabled
CL = 50pF, f = 10 MHz
VCC = 2.5V ±0.2V
VCC = 3.3V ±0.3V
Typ.
16
18
4
6
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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PS8095B 10/07/98