21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC+16334
2.5V 16-Bit Universal Bus Driver
with 3-State Outputs
Product Features
PI74AVC+16334 is designed for low voltage operation,
V
CC
= 1.65V to 3.6V
True ±24mA Balanced Drive @ 3.3V
Compatible with Philips and T.I. AVC Logic family
I
OFF
supports partial power-down operation
3.6V I/O Tolerant inputs and outputs
Meets PC133 SDRAM Registered DIMM specifications
All outputs contain a patented DDC
(Dynamic Drive Control) circuit that reduces noise
without degrading propagation delay
Industrial operation at 40°C to +85°C
Available Packages:
48-pin 240-mil wide plastic TSSOP (A)
48-pin 173-mil wide plastic TVSOP (K)
Product Description
Pericom Semiconductors PI74AVC+ series of logic circuits are
produced using the Companys advanced submicron CMOS
technology, achieving industry leading speed.
The 16-bit PI74AVC+16334 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 LOW.
When LE is HIGH, the A data is latched if CLK is held at a high or
low logic level. If LE is HIGH, the A-data 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 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
1
48
25
47
1D
C1
CLK
2
Y1
TO 15 OTHER CHANNELS
1
PS8525
02/28/01
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC+16334
2.5V 16-Bit Universal Bus Driver
with 3-State Outputs
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Supply voltage range, V
CC
............................................. 0.5V to +4.6V
Input voltage range, V
I
................................................... 0.5V to +4.6V
Voltage range applied to any output in the
high-impedance or power-off state, V
O(1)
...................... 0.5V to +4.6V
Voltage range applied to any output in the
high or low state, V
O(1,2)
......................................... 0.5V to V
CC
+0.5V
Input clamp current, I
IK
(V
I
<0) .................................................... 50mA
Output clamp current, I
OK
(V
O
<0) .............................................. 50mA
Continuous output current, I
O
.................................................... ±50mA
Continuous current through each V
CC
or GND ......................... ±100mA
Package thermal impedance,
θ
JA(3)
: package A .........................64°C/W
package K ......................... 48°C/W
Storage Temperature range, T
stg
.................................... 65°C to 150°C
Notes:
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.
1. Input & output negative-voltage ratings may be
exceeded if the input and output curent rating are
observed.
2. Output positive-voltage rating may be exceeded up to
4.6V maximum if the output current rating is observed.
3. The package thermal impedance is calculated in accor-
dance with JESD 51.
Product Pin Configuration
OE
Y1
Y2
GND
Y3
Y4
V
CC
Y5
Y6
GND
Y7
Y8
Y9
Y10
GND
Y11
Y12
V
CC
Y13
Y14
GND
Y15
Y16
NC
CLK
A1
A2
GND
A3
A4
V
CC
A5
A6
GND
A7
A8
A9
A10
GND
A11
A12
V
CC
A13
A14
GND
A15
A16
LE
Product Pin Description
Pin Name
Description
Output Enable Input (Active LOW)
Latch Enable (Active LOW)
Clock Input
Data Input
Data Output
Ground
Power
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
OE
LE
CLK
A
Y
GND
V
CC
Truth Table
(1)
Inputs
xOE
H
L
L
L
L
L
LE
X
L
L
H
H
H
48-Pin
A,K
CLK
X
X
X
↑
↑
L or H
A
X
L
H
L
H
X
Outputs
Y
Z
L
H
L
H
Yo
(2)
Notes:
1. H = High Signal Level
L = Low Signal Level
↑
= Transition LOW-to-HIGH
X = Dont Care or Irrelevant
Z = High Impedance
2. Output level before the indicated steady-state
input conditions were established.
2
PS8525
02/28/01
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC+16334
2.5V 16-Bit Universal Bus Driver
with 3-State Outputs
Recommended Operating Conditions
(1)
M in.
V
CC
Supply Voltage
Operating
Data retention only
V
CC
= 1.2V
V
IH
High- level Input Voltage
V
CC
= 1.4V to 1.6V
V
CC
= 1.65V to 1.95V
V
CC
= 2.3V to 2.7V
V
CC
= 3V to 3.6V
V
CC
= 1.2V
V
CC
= 1.4V to 1.6V
V
IL
Low- level Input Voltage
V
CC
= 1.65V to 1.95V
V
CC
= 2.3V to 2.7V
V
CC
= 3V to 3.6V
V
I
V
O
Input Voltage
Output Voltage
Active State
3- State
V
CC
= 1.4V to 1.6V
I
OHS
High- level output current
V
CC
= 1.65V to 1.95V
V
CC
= 2.3V to 2.7V
V
CC
= 3V to 3.6V
V
CC
= 1.4V to 1.6V
I
OLS
Low- level output current
V
CC
= 1.65V to 1.95V
V
CC
= 2.3V to 2.7V
V
CC
= 3V to 3.6V
∆t∆
v Input transition rise or fall rate
T
A
Operating free- air temperature
V
CC
= 1.4V to 3.6V
40
0
0
0
1.4
1.2
V
CC
0.65 x V
CC
0.65 x V
CC
1.7
2
GND
0.35 x V
CC
0.35 x V
CC
0.7
0.8
3.6
V
CC
3.6
4
6
12
24
4
6
12
24
5
85
ns/V
°C
mA
V
M ax.
3.6
Units
Notes:
1. All unused inputs must be held at V
CC
or GND to ensure proper device operation.
3
PS8525
02/28/01
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC+16334
2.5V 16-Bit Universal Bus Driver
with 3-State Outputs
DC Electrical Characteristics
(Over the Operating Range, T
A
= 40°C +85°C)
Parame te rs
Te s t Conditions
(1)
I
OH
= 100µA
I
OHS
= 4mA
V
OH
I
OHS
= 6mA
I
OHS
= 12mA
I
OHS
= 24mA
I
OLS
= 100µA
I
OLS
= 4mA
V
OL
I
OLS
= 6mA
I
OLS
= 12mA
I
OLS
= 24mA
I
I
Control Inputs
I
OFF
I
OZ
I
CC
Control Inputs
C
I
Data Inputs
V
I
= V
CC
or GND
V
IL
= 0.49V
V
IL
= 0.57V
V
IL
= 0.7V
V
IL
= 0.8V
V
IH
= 0.91V
V
IH
= 1.07V
V
IH
= 1.7V
V
IH
= 2V
V
CC
1.4V to 3.6V
1.4V
1.65V
2.3V
3V
1.4V to 3.6V
1.4V
1.65V
2.3V
3V
3.6V
0
3.6V
I
O
= 0
3.6V
2.5V
3.3V
2.5V
3.3V
V
O
= V
CC
or GND
2.5V
3.3V
3.5
3.5
6
6
6.5
6.5
pF
M in.
V
CC
0.2V
1.05
1.2
1.75
2.0
0.2
0.4
0.45
0.55
0.8
±2.5
±10
±10
40
µA
V
Typ.
M ax.
Units
V
I
= V
CC
or GND
V
I
or V
O
= 3.6V
V
O
= V
CC
or GND
V
I
= V
CC
or GND
C
O
Outputs
Note:
Typical values are measured at T
A
= 25°C.
4
PS8525
02/28/01
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC+16334
2.5V 16-Bit Universal Bus Driver
with 3-State Outputs
Operating Requirements over recommended operating free-air temperature range
(unless otherwise noted, see Figures 1 thru 4)
V
C
= 1.2V
C
M in.
f
clock
Clock Frequency
t
w
Pulse
Duration
t
su
Setup
Time
t
h
Hold
Time
t
h
Hold
Time
LE low
CLK high or low
Data before CLK
↑
Data
before LE
↑
Data after CLK
↑
Data after LE
↑
CLK high
CLK low
CLK high
CLK low
1
1.5
2.7
1.3
2.2
2.4
M ax.
V
C
= 1.5V
C
± 0.1V
M in.
V
C
= 1.8V
C
± 0.15V
M ax.
150
3.3
3.3
V
C
= 2.5V
C
± 0.2V
M in.
M ax.
150
3.3
3.3
0.7
0.9
1
0.8
1.5
1.4
V
C
= 3.3V
C
± 0.3V
M in.
M ax.
150
3.3
3.3
0.7
0.9
1
0.7
1.5
1.3
Units
MHz
M ax. M in.
0.8
1.4
1.6
1.1
1.9
1.8
0.7
0.9
1.2
0.9
1.7
1.6
ns
Switching Characteristics over recommended operating free-air temperature range
(unless otherwise noted, see Figures 2 thru 5)
Parame te r
f
max
From
(Input)
To
(Output)
V
CC
= 1.2V
Typ.
V
CC
= 1.5V
± 0.1V
M in.
M ax.
V
CC
= 1.8V
± 0.15V
M in.
150
M ax.
V
CC
= 2.5V
± 0.2V
M in.
150
M ax.
V
CC
= 3.3V
± 0.3V
M in.
150
M ax.
Units
MHz
A
t
pd
LE
CLK
t
en
t
dis
OE
OE
Y
5.3
7
6
7.9
7.7
1.2
2.2
1.9
2.4
2.1
6.2
9.7
7.8
10.2
10.3
1.5
1.8
1.6
1.6
1.5
4.9
7.5
6
8.8
8.4
1
1.5
1.1
1.5
1.2
3.2
4.9
3.7
6.7
5.3
0.9
0.8
1
1
1
2.5
4
3.1
6.2
5.3
ns
Operating Characteristics, T
A
= 25°C
Parame te rs
Cpd Power
Dissipation
Capacitance
Te s t
Conditions
C
L
= 0pF,
f = 10 MHz
V
CC
= 1.8V ±0.15V
Typical
45
23
V
CC
= 2.5V ±0.2V
Typical
48
25
V
CC
= 3.3V
±0.3V
Typical
52
28
pF
Units
Outputs Enabled
Outputs Disabled
5
PS8525
02/28/01
京公网安备 11010802033920号
EEWORLD
