ETC PI74ALVC162835FA

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 26-Ohm 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
Product Pin Description
OE
CLK
Pin Name
OE
LE
CLK
A
Y
GND
VCC
27
30
28
LE
A1
54
Description
Output Enable Input (Active LOW)
Latch Enable
Clock Input
Data Input
Data Output
Ground
Power
1D
C1
3
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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Truth Table(1)
Product Pin Configuration
NC
1
NC
2
Y1
3
GND
56
55
GND
A1
4
54
53
Y2
5
Y3
6
VCC
Inputs
NC
Outputs
Y
OE
LE
CLK
A
GND
H
X
X
X
Z
52
A2
A3
L
H
X
L
L
7
51
50
L
H
X
H
H
Y4
8
49
A4
Y5
L
↑
L
L
Y6
10
48
47
A5
L
9
L
L
↑
H
H
GND
11
L
L
H
X
Yo(2)
L
L
L
X
Yo(3)
VCC
A6
46
56-Pin
12
45
13 A, K, V 44
GND
14
15
16
43
42
A9
41
A11
17
18
40
39
A12
GND
Y13
19
38
37
36
A13
Y14
VCC
Y7
Y8
Y9
Y10
Y11
Y12
A7
A8
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.
A10
GND
A14
Y15
20
21
VCC
22
Y16
23
35
34
Y17
24
33
A17
GND
32
31
GND
Y18
25
26
OE
27
30
CLK
LE
28
29
GND
A15
A16
A18
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
D e s cription
VCC
Supply Voltage
VIH
Input HIGH Voltage
VIL
Input LO W Voltage
VIN
Input Voltage
0
VCC
VOUT
O utput Voltage
0
VCC
IOH
IOL
TA
High- level O utput Current
Low- level O utput 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
O perating 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 typ e.
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
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PS8377A
07/01/99