ETC PI74ALVC162835F

PI74ALVC162835F
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18-Bit Universal Bus Driver
with 3-State Outputs
Product Features
Product Description
• PI74ALVC162835F is designed for low voltage operation,
VCC = 2.3V to 3.6V
• Outputs have equivalent 26Ω series resistors
• Supports PC133 Registered DIMM
• 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
• Industrial operation at –40°C to +85°C
• Packages available:
– 56-pin 240 mil wide plastic TSSOP (A)
– 56-pin 173 mil wide plastic TVSOP (K6)
– 56-pin 300 mil wide plastic SSOP (V)
Pericom Semiconductor’s PI74ALVC series of logic circuits
are produced using the Company’s advanced 0.5 micron CMOS
technology, achieving industry leading speed.
The 18-bit PI74ALVC162835F universal bus driver is designed
for 2.3V to 3.6V VCC operation.
Data flow from A to Y is controlled by Output Enable (OE).
The device operates in the transparent mode when LE is HIGH. The
A data is latched if CLK is held at a high or low logic level. If LE
is LOW, the A-bus is stored in the latch/flip-flop on the low-to-high
transition of CLK. When OE is HIGH, the outputs are in the highimpedance state.
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.
Logic Block Diagram
OE
CLK
LE
A1
27
30
28
54
1D
3
C1
Y1
CLK
TO 17 OTHER CHANNELS
1
PS8377A
07/01/99
PI74ALVC162835F
18-Bit
Universal
Bus
Driver
with
3-State Outputs
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Product Pin Description
Pin Name
OE
LE
CLK
A
Y
GND
VCC
Truth Table(1)†
Description
Output Enable Input (Active LOW)
Latch Enable
Clock Input
Data Input
Data Output
Ground
Power
Inputs
Product Pin Configuration
NC
1
2
56
55
GND
NC
Y1
3
Y2
4
5
54
53
52
A1
GND
Y3
6
51
A3
VCC
7
8
50
49
VCC
48
47
A5
46
GND
Y4
56-Pin
A56
K56
V56
GND
A2
A4
9
Y6
10
GND
11
Y7
12
13
45
44
A7
Y8
Y9
14
15
16
43
42
41
A9
17
18
40
39
A12
19
20
21
38
37
36
A13
22
23
24
35
34
33
VCC
25
26
32
31
GND
27
28
30
29
CLK
Y10
Y11
Y12
GND
Y13
Y14
Y15
VCC
Y16
Y17
GND
Y18
OE
LE
OE
LE
CLK
A
H
X
X
X
Z
L
H
X
L
L
L
H
X
H
H
L
L
↑
L
L
L
L
↑
H
H
L
L
H
X
Yo(2)
L
L
L
X
Yo(3)
Notes:
1. H = High Signal Level
L = Low Signal Level
Z = High Impedance
↑ = Transition LOW-to-HIGH
X = Irrelevant
2. Output level before the indicated steady-state input conditions were established, provided that CLK is high
before LE goes low.
3. Output level before the indicated steady-state input
conditions were established.
NC
Y5
Outputs
Y
A6
A8
A10
A11
GND
A14
A15
A16
A17
A18
GND
2
PS8377A
07/01/99
PI74ALVC162835F
18-Bit
Universal
Bus
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.
Recommended Operating Conditions(1)
Parame te rs
De s cription
VCC
Supply Voltage
VIH
Input HIGH Voltage
VIL
Input LOW Voltage
VIN
Input Voltage
0
VCC
VOUT
Output Voltage
0
VCC
IOH
IOL
TA
High- level Output Current
Low- level Output Current
Te s t Conditions
M in.
2.3
VCC = 2.3V to 2.7V
1.7
VCC = 2.7V to 3.6V
2.0
Typ.
M ax.
3.6
VCC = 2.3V to 2.7V
0.7
VCC = 2.7V to 3.6V
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
Operating Free- Air Temperature
- 40
Units
85
V
mA
°C
Note:
1. Unused control inputs must be held HIGH or LOW to prevent them from floating.
3
PS8377A
07/01/99
PI74ALVC162835F
18-Bit
Universal
Bus
Driver
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 r
VCC(1)
M in.(1)
Min.. to Max.
VCC - 0.2
VIH =1.7V
2.3V
1.9
VIH =1.7V
2.3V
1.7
VIH =2.0V
3.0V
2.4
IOH = - 8mA
VIH =2.0V
2.7V
2.0
IOH = - 12mA
VIH =2.0V
3.0V
2.0
M ax.(1)
Units
Min.. to Max.
0.2
V
VIL = 0.7V
2.3V
0.4
VIL = 0.7V
2.3V
0.55
VIL = 0.8V
3.0V
0.55
IOH = 8mA
VIL = 0.8V
2.7V
0.6
IOH = 12mA
VIL = 0.8V
3.0V
0.8
Conditions
IOH = - 100µA
IOH = - 4mA
VOH
IOH = - 6mA
IOH = 100µA
IOH = 4mA
VOL
IOH = 6mA
Typ.(2)
II
VI = VCC or GND
3.6V
±5
IOZ
VO = VCC or GND
3.6V
±5
ICC
VI = VCC or GND
3.6V
40
∆ICC
One input at VCC - 0.6V,
Other inputs a VCCor GND
3V to 3.6V
750
CI Controls Inputs
VI = VCC or GND
3.3V
4.0
Data Input
VO = VCC or GND
3.3V
4.0
CO Outputs
VO = VCC or GND
3.3V
5.0
µΑ
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. For I/O ports, the IOZ includes the input leakage current.
4
PS8377A
07/01/99
PI74ALVC162835F
18-Bit
Universal
Bus
Driver
with
3-State Outputs
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Timing Requirements over Operating Range
Parame te rs
De s cription
fCLOCK
tW Pulse
Duration
tSU Setup
time
tH Hold time
∆t/∆v(1)
Vcc = 2.5 V ± 0.2V
Vcc = 2.7V
Vcc = 3.3V ± 0.3V
M in.
M ax.
M in.
M ax.
M in.
M ax.
Clock frequency
0
150
0
150
0
150
LE high
3.3
3.3
3.3
CLK high or low
3.3
3.3
3.3
Data before CLK↑
2.2
2.1
1
Data before LE↓, CLK High
1.9
1.6
1.5
Data before LE↓, CLK Low
1.3
1.1
1
Data after CLK↑
0.6
0.6
0.6
Data after LE↓, CLK High or Low
1.4
1.7
1.4
Input Transition Rise or Fall
0
10
0
10
0
Units
MHz
ns
10
ns/V
Note:
1. 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)
VCC = 2.5V ± 0.2V
M in.
M ax.
150
fMAX
VCC = 2.7V
M in.
VCC = 3.3V ±0.3V
M ax.
150
M in.
M ax.
150
Units
MHz
tPD
A
Y
1
5
5
1
4.2
tPD
LE
Y
1.3
5.9
5.8
1.3
5.1
tPD
CLK
Y
1.4
6.3
6.1
1.4
3.5
tEN
OE
Y
1.4
6.3
6.5
1.1
5.5
tDIS
OE
Y
1
4.9
4.9
1.3
4.5
ns
Notes:
1. Unused control inputs must be held HIGH or LOW to prevent them from floating.
Operating Characteristics, TA = 25°C
Parame te rs
Te s t
Conditions
VCC = 2.5V ± 0.2V
VCC = 3.3V ± 0.3V
Typical
Typical
CPD Power Dissipation Outputs Enabled
Capacitance
Outputs Disabled
CL = 0pF,
F = 10 MHz
35.5
40
12.5
14
Units
pF
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
5
PS8377A
07/01/99