21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
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2109876543212109876543210987654321098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74ALVC162834FD
18-Bit Universal Bus Driver
with 3-State Outputs
Product Features
PI74ALVC162834F is designed for low voltage operation,
V
CC
= 2.3V to 3.6V
Data inputs have clamp diodes to V
CC
Outputs have equivalent 26Ω series resistors
Supports PC133 Registered DIMM
Typical V
OLP
(Output Ground Bounce)
< 0.8V at V
CC
= 3.3V, T
A
= 25°C
Typical V
OHV
(Output Voh Undershoot)
< 2.0V at V
CC
= 3.3V, T
A
= 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 (K)
56-pin 300 mil wide plastic SSOP (V)
Product Description
Pericom Semiconductors PI74ALVC series of logic circuits
are produced using the Companys advanced 0.5 micron CMOS
technology, achieving industry leading speed.
The 18-bit PI74ALVC162834FD universal bus driver is designed
for 2.3V to 3.6V V
CC
operation.
Data flow from A to Y is controlled by Output Enable (OE).
The device operates in the transparent mode when LE is LOW. The
A data is latched if CLK is held at a high or low logic level. If LE
is HIGH, 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 high-
impedance state.
To ensure the high-impedance state during power up or power
down, OE should be tied to V
CC
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
C1
CLK
3
Y1
TO 17 OTHER CHANNELS
1
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04/25/00
Product Pin Description
Pin Name
OE
LE
CLK
A
Y
GND
V
CC
Description
Output Enable Input (Active LOW)
Latch Enable (Active LOW)
Clock Input
Data Input
Data Output
Ground
Power
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74ALVC162834FD
18-Bit Universal Bus Driver with 3-State Outputs
Truth Table
(1)
Inputs
OE
H
L
L
L
L
LE
X
L
L
H
H
H
H
CLK
X
X
X
↑
↑
H
L
A
X
L
H
L
H
X
X
Outputs
Y
Z
L
H
L
H
Yo
(2)
Yo
(3)
Product Pin Configuration
NC
NC
Y1
GND
Y2
Y3
VCC
Y4
Y5
Y6
GND
Y7
Y8
Y9
Y10
Y11
Y12
GND
Y13
Y14
Y15
VCC
Y16
Y17
GND
Y18
OE
LE
L
L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
56-Pin
15
A,K,V
16
17
18
19
20
21
22
23
24
25
26
27
28
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
GND
NC
A1
GND
A2
A3
VCC
A4
A5
A6
GND
A7
A8
A9
A10
A11
A12
GND
A13
A14
A15
VCC
A16
A17
GND
A18
CLK
GND
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 HIGH.
3. Output level before the indicated steady-state input
conditions were established.
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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74ALVC162834FD
18-Bit Universal Bus 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 ................................................................... 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 condi-
tions for extended periods may affect reliability.
Recommended Operating Conditions
(1)
Parame te rs
V
CC
V
IH
V
IL
V
IN
V
OUT
I
OH
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
V
CC
= 2.3V
High- level Output Current
V
CC
= 2.7V
V
CC
= 3.0V
V
CC
= 2.3V
I
OL
T
A
Low- level Output Current
V
CC
= 2.7V
V
CC
= 3.0V
Operating Free- Air Temperature
- 40
Te s t Conditions
M in.
2.3
1.7
2.0
0.7
0.8
V
CC
V
CC
-6
-8
- 12
6
8
12
85
°C
mA
V
Typ.
M ax.
3.6
Units
Input LOW Voltage
Input Voltage
Output Voltage
Note:
1. Unused control inputs must be held HIGH or LOW to prevent them from floating.
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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74ALVC162834FD
18-Bit Universal Bus Driver with 3-State Outputs
DC Electrical Characteristics
(Over the Operating Range, T
A
= 40°C to +85°C, V
CC
= 3.3V ± 10%)
Parame te r
I
OH
= 100
µA
I
OH
= 4mA
V
OH
I
OH
= 6mA
I
OH
= 8mA
I
OH
= 12mA
I
OH
= 100
µA
I
OH
= 4mA
V
OL
I
OH
= 6mA
I
OH
= 8mA
I
OH
= 12mA
I
I
I
OZ
I
CC
∆I
CC
V
I
= V
CC
or GND
V
O
= V
CC
or GND
V
I
= V
CC
or GND
One input at VCC - 0.6V,
Other inputs a VCCor GND
V
IL
= 0.7V
V
IL
= 0.7V
V
IL
= 0.8V
V
IL
= 0.8V
V
IL
= 0.8V
V
IH
=1.7V
V
IH
=1.7V
V
IH
=2.0V
V
IH
=2.0V
V
IH
=2.0V
Conditions
V
CC
(1)
Min.. to Max.
2.3V
2.3V
3.0V
2.7V
3.0V
Min.. to Max.
2.3V
2.3V
3.0V
2.7V
3.0V
3.6V
3.6V
3.6V
3V to 3.6V
3.3V
3.3V
3.3V
4.0
5.5
5.0
pF
M in.
(1)
V
CC
- 0.2
1.9
1.7
2.4
2.0
2.0
0.2
0.4
0.55
0.55
0.6
0.8
±5
±5
40
750
µΑ
V
Typ.
(2)
M ax.
(1)
Units
C
I
Controls Inputs V
I
= V
CC
or GND
Data Input
C
O
Outputs
V
O
= V
CC
or GND
V
O
= V
CC
or GND
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device typ e.
2. Typical values are at V
CC
= 3.3V, +25°C ambient and maximum loading.
3. For I/O ports, the I
OZ
includes the input leakage current.
4
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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74ALVC162834FD
18-Bit Universal Bus Driver with 3-State Outputs
Timing Requirements over Operating Range
ALVC162834FD
Parame te rs
D e s cription
V
CC
= 2.5 V ± 0.2V
M in.
f
CLOCK
t
W
Pulse Duration
Clock frequency
LE LO W
CLK HIGH or LO W
Data before CLK
↑
t
SU
Setup time
Data before LE
↑
, CLK HIGH
Data before LE
↑
, CLK LO W
t
H
Hold time
∆
t/
∆v
(1)
Data after CLK
↑
Data after LE
↑
, CLK HIGH or LO W
Input Transition Rise or Fall
0
3.3
3.3
2.1
2.3
1.9
0.6
0.8
0
10
M ax.
150
V
CC
= 2.7V
M in.
0
3.3
3.3
2.1
2.3
1.9
0.6
8
0
10
M ax.
150
V
CC
= 3.3V ± 0.3V
M in.
0
3.3
3.3
1
1.9
1.5
0.6
0.9
0
10
ns/V
ns
M ax.
150
MHz
Units
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
f
MAX
t
PD
t
PD
t
PD
t
EN
t
DIS
A
LE
CLK
OE
OE
Y
Y
Y
Y
Y
From
(Input)
To
(Output)
V
CC
= 2.5V ± 0.2V
M in.
150
1
1.3
1.4
1.4
1
5.2
6.0
6.8
6.3
4.4
M ax.
V
CC
= 2.7V
M in.
150
5
6.8
6.1
6.5
5.2
M ax.
V
CC
= 3.3V ±0.3V
M in.
150
1
1.3
1.4
1.5
1.8
4.2
5.8
3.5
5.9
5.0
ns
M ax.
Units
MHz
Notes:
1. Unused control inputs must be held HIGH or LOW to prevent them from floating.
Operating Characteristics, T
A
= 25°C
Parame te rs
C
PD
Power Dissipation Outputs Enabled
Capacitance
Outputs Disabled
Te s t
Conditions
C
L
= 0pF,
F = 10 MHz
V
CC
= 2.5V ± 0.2V
Typical
38
13
V
CC
= 3.3V ± 0.3V
Typical
41
15
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
PS8475
04/25/00
MCU
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