1
PS8356A 11/23/98
Product Description
Pericom Semiconductors PI74ALVTC series of logic circuits are
produced in the Companys advanced 0.35 micron CMOS
technology, achieving industry leading speed.
The PI74ALVTC16374 is particularly suitable for implementing
buffer registers, I/O ports, bidirectional bus drivers, and working
registers. This device can be used as two 8-bit Flip-Flops or one
16-bit flip-flop. On the positive transition of the clock (CLK)
input, the Q outputs of the flip-flop take on the logic levels set up
at the data (D) inputs.
A buffered Output Enable (OE) input can be used to place the eight
outputs in either a normal logic state (high or low logic levels) or
a high-impedance state in which the outputs neither load nor drive
the bus lines significantly. The high-impedance state and the
increased drive provide the capability to drive bus lines without
need for interface or pullup components. OE does not affect
internal operations of the flip-flop. Old data can be retained or new
data can be entered while 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 Vdd through a pullup resistor; the
minimum value of the resistor is determined by the current-
sinking capability of the driver.
The family offers both I/O Tolerant, which allows it to operate in
mixed 1.8/3.6V systems, and Bus Hold, which retains the data
inputs last state whenever the data input goes to high-imped-
ance, preventing floating inputs and eliminating the need for
pullup/down resistors.
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
PI74ALVTC16374
16-Bit D-Type Flip-Flop
with 3-STATE Outputs
Logic Block Diagram
Product Features
The PI74ALVTC Family is designed for low voltage
operation, V
DD
= 1.8V to 3.6V
Supports Live Insertion
3.6V I/O Tolerant Inputs and Outputs
Bus Hold
High Drive, 32/64mA @ 3.3V
Uses patented Noise Reduction Circuitry
Power-Off high impedance inputs and outputs
Industrial operation at 40C to +85C
Packages available:
48-pin 240 mil wide plastic TSSOP (A)
48-pin 173 mil wide plastic SSOP (V)
48-pin 300 mil wide plastic TVSOP (K)
1CLK
1Q1
1D
>C1
1D1
To Seven Other Channels
1OE
1
48
47
2
2CLK
2Q1
2D1
To Seven Other Channels
25
36
13
24
2OE
1D
>C1
2
PS8356A 11/23/98
PI74ALVTC16374
16-Bit D-Type Flip-Flop with 3-STATE Outputs
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
s
t
u
p
n
I
s
t
u
p
t
u
O
E
O
K
L
C
D
Q
L
H
H
L
L
L
L
L
r
o
H
X
Q
0
H
X
X
Z
Product Pin Description
Truth Table
(1)
Notes:
1.
H = High Signal Level
L = Low Signal Level
X = Don't Care or Irrelevant
Z = High Impedance
Product Pin Configuration
1
OE
1
Q
1
1
Q
2
GND
1
Q
3
1
Q
4
V
CC
1
Q
5
1
Q
6
GND
1
Q
7
1
Q
8
2
Q
1
2
Q
2
GND
2
Q
3
2
Q
4
V
CC
2
Q
5
2
Q
6
GND
2
Q
7
2
Q
8
2
OE
1
2
3
4
5
6
7
8
9
48
10
47
11
46
12
45
13
44
14
43
15
42
16
41
17
40
18
39
19
38
20
37
21
36
22
35
23
34
24
33
32
31
30
29
28
27
26
25
1
CLK
1
D
1
1
D
2
GND
1
D
3
1
D
4
V
CC
1
D
5
1
D
6
GND
1
D
7
1
D
8
2
D
1
2
D
2
GND
2
D
3
2
D
4
V
CC
2
D
5
2
D
6
GND
2
D
7
2
D
8
2
CLK
48-PIN
A48
K48
V48
Pin Name
Description
OE
Output Enable Input (Active LOW)
CLK
Clock Input
Dx
Data Inputs
Qx
3-State Outputs
GND
Ground
V
CC
Power
3
PS8356A 11/23/98
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
PI74ALVTC16374
16-Bit D-Type Flip-Flop with 3-STATE Outputs
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 indi-
cated in the operational sections of this specification is not
implied. Exposure to absolute maximum rating conditions
for extended periods may affect reliability.
Supply Voltage Range, V
DD
............................................ 0.5V to 4.6V
Input Voltage Range, V
I
................................................... -0.5V to 4.6V
Output Voltage Range, V
O
(3-Stated) .............................. -0.5V to 4.6V
Output Voltage Range, V
O
(1)
(Active) ................... 0.5V to V
DD
+0.5V
DC Input Diode Current (I
IK
) V
I
<0V.......................................... -50mA
DC Output Diode Current (I
OK
)
V
O
<0V ..................................................................................... -50mA
V
O
>V
DD
.................................................................................. 50mA
DC V
DD
or GND Current per Supply Pin (I
CC
or GND) ......... 100mA
Storage Temperature Range, T
stg
....................................65C to150C
Recommended Operating Conditions
(2)
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Notes
1. Absolute maximum of I
O
must be observed.
2. Unused control inputs must be held HIGH or LOW to prevent them from floating.
3 As measured between 0.8V and 2.0V, V
DD
= 3.0V.
.
n
i
M
.
x
a
M
s
ti
n
U
V
D
D
e
g
a
tl
o
v
y
l
p
p
u
S
g
n
it
a
r
e
p
O
8
.
1
6
.
3
V
y
l
n
O
n
o
it
n
e
t
e
R
a
t
a
D
2
.
1
6
.
3
V
H
I
e
g
a
tl
o
v
t
u
p
n
i
l
e
v
el
-
h
g
i
H
V
D
D
V
6
.
3
o
t
V
7
.
2
=
0
.
2
V
L
I
e
g
a
tl
o
v
t
u
p
n
i
l
e
v
el
-
w
o
L
V
D
D
V
6
.
3
o
t
V
7
.
2
=
8
.
0
V
I
e
g
a
tl
o
v
t
u
p
n
I
3
.
0
-
6
.
3
V
O
e
g
a
tl
o
v
t
u
p
t
u
O
e
t
a
t
S
e
v
it
c
A
0
V
D
D
e
t
a
t
S
ff
O
0
6
.
3
I
n
i
t
n
e
rr
u
c
t
u
p
t
u
O
H
O
I/
L
O
V
D
D
V
6
.
3
o
t
V
0
.
3
=
V
D
D
V
0
.
3
o
t
V
7
.
2
=
V
D
D
V
7
.
2
o
t
V
3
.
2
=
V
D
D
V
8
.
1
=
4
6
/
2
3
4
2
8
1
6
A
m
/t
v
e
t
a
r
ll
a
f
r
o
e
si
r
n
o
it
si
s
n
a
rt
t
u
p
n
I
)
3
(
0
0
1
V
/
s
n
T
A
e
r
u
t
a
r
e
p
m
e
t
ri
a
-
e
e
rf
g
n
it
a
r
e
p
O
-
0
4
5
8
C
4
PS8356A 11/23/98
PI74ALVTC16374
16-Bit D-Type Flip-Flop with 3-STATE Outputs
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Electrical Characteristics over Recommended Operating Free-Air Temperature Range
(unless otherwise noted).
DC Characteristics (2.7V<V
DD
3.6V)
r
e
t
e
m
a
r
a
P
s
n
o
it
i
d
n
o
C
V
D
D
.
n
i
M
.
p
y
T
.
x
a
M
s
ti
n
U
V
H
I
e
g
a
tl
o
V
t
u
p
n
I
l
e
v
e
L
H
G
I
H
6
.
3
-
7
.
2
0
.
2
V
V
L
I
e
g
a
tl
o
V
t
u
p
n
I
l
e
v
e
L
W
O
L
8
.
0
V
H
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
e
v
e
L
H
G
I
H
I
H
O
=
-
0
0
1
A
V
D
D
2
.
0
-
I
H
O
=
-
A
m
2
1
7
.
2
2
.
2
I
H
O
=
-
A
m
8
1
0
.
3
4
.
2
I
H
O
=
-
A
m
4
2
2
.
2
I
H
O
=
-
A
m
2
3
0
.
2
V
L
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
e
v
e
L
W
O
L
I
L
O
=
0
0
1
A
6
.
3
-
7
.
2
2
.
0
I
L
O
= 2
1 A
m
7
.
2
4
.
0
I
L
O
= 8
1 A
m
0
.
3
4
.
0
I
L
O
= 4
2 A
m
5
4
.
0
I
L
O
= 2
3 A
m
5
.
0
I
L
O
= 4
6 A
m
5
5
.
0
I
I
t
n
e
rr
u
C
e
g
a
k
a
e
L
t
u
p
n
I
V
I
V
=
D
D
D
N
G
r
o
,
6
.
3
0
.
5
A
I
Z
O
e
g
a
k
a
e
L
t
u
p
t
u
O
E
T
A
T
S
-
3
V
O
V
6
.
3
=
7
.
2
0
1
I
F
F
O
e
g
a
k
a
e
L
F
F
O
-r
e
w
o
P
t
n
e
rr
u
C
V
I
V
r
o
O
V
6
.
3
0
0
1
I
L
D
O
w
o
L
t
n
e
rr
u
C
t
u
p
t
u
O
V
IN
=
V
IH
V
r
o
IL
,
V
5
.
1
=
o
V
)
1
(
6
.
3
0
5
1
4
3
3
A
m
I
H
D
O
h
g
i
H
t
n
e
rr
u
C
t
u
p
t
u
O
V
IN
=
V
IH
V
r
o
IL
,
V
5
.
1
=
o
V
)
1
(
8
5
-
4
1
1
-
I
D
L
O
H
t
n
e
rr
u
C
d
l
o
H
s
u
B
st
u
p
t
u
O
B
r
o
A
V
I
V
8
.
0
=
0
.
3
5
7
A
V
I
V
0
.
2
=
5
7
-
V
I
V
6
.
3
o
t
0
=
6
.
3
0
0
5
I
D
D
t
n
e
rr
u
C
y
l
p
p
u
S
t
n
e
c
s
ei
u
Q
V
I
V
=
D
D
D
N
G
r
o
6
.
3
-
7
.
2
0
5
V
D
D
V
(
I
V
,
O
)
V
6
.
3
0
5
I
D
D
I
n
i
e
s
a
e
r
c
n
I
D
D
t
u
p
n
i
r
e
p
V
H
I
V
=
D
D
,
V
6
.
0
-
V
t
a
st
u
p
n
i
r
e
h
t
O
D
D
D
N
G
r
o
0
0
4
Notes
1. Duration of test must not exceed 1 second with only 1 output tested at a time.
5
PS8356A 11/23/98
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
PI74ALVTC16374
16-Bit D-Type Flip-Flop with 3-STATE Outputs
n
o
it
p
i
r
c
s
e
D
s
r
e
t
e
m
a
r
a
P
s
n
o
it
i
d
n
o
C
V
D
D
.
n
i
M
.
p
y
T
.
x
a
M
s
ti
n
U
V
H
I
e
g
a
tl
o
V
t
u
p
n
I
l
e
v
e
L
H
G
I
H
7
.
2
-
3
.
2
6
.
1
V
V
L
I
e
g
a
tl
o
V
t
u
p
n
I
l
e
v
e
L
W
O
L
7
.
0
V
H
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
e
v
e
L
H
G
I
H
I
H
O
0
0
1
-
=
A
V
D
D
2
.
0
-
I
H
O
A
m
2
1
-
=
3
.
2
8
.
1
I
H
O
A
m
8
1
-
=
7
.
1
V
L
O
e
g
a
tl
o
V
t
u
p
t
u
O
l
e
v
e
L
W
O
L
I
L
O
0
0
1
=
A
7
.
2
-
3
.
2
2
.
0
I
L
O
A
m
2
1
=
3
.
2
4
.
0
I
L
O
A
m
8
1
=
5
.
0
I
L
O
A
m
4
2
=
5
5
.
0
I
I
t
n
e
rr
u
C
e
g
a
k
a
e
L
t
u
p
n
I
V
I
V
=
D
D
D
N
G
r
o
7
.
2
0
.
5
A
I
Z
O
e
g
a
k
a
e
L
t
u
p
t
u
O
E
T
A
T
S
-
3
V
O
6
.
3
=
V
3
.
2
0
1
I
F
F
O
t
n
e
rr
u
C
e
g
a
k
a
e
L
F
F
O
-r
e
w
o
P
V
I
V
r
o
O
6
.
3
V
0
0
1
I
L
D
O
w
o
L
t
n
e
rr
u
C
t
u
p
t
u
O
V
N
I
=
V
H
I
r
o V
,
L
I
V
O
=
V
5
.
1
)
2
(
7
.
2
0
1
1
4
6
2
A
m
I
H
D
O
h
g
i
H
t
n
e
rr
u
C
t
u
p
t
u
O
V
N
I
=
V
H
I
r
o V
,
L
I
V
O
=
V
5
.
1
)
2
(
0
3
-
0
6
-
I
D
L
O
H
)
1
(
t
n
e
rr
u
C
d
l
o
H
s
u
B
st
u
p
t
u
O
B
r
o
A
V
I
V
7
.
0
=
5
.
2
0
9
A
V
I
V
7
.
1
=
0
9
-
I
D
D
t
n
e
rr
u
C
y
l
p
p
u
S
t
n
e
c
s
ei
u
Q
V
I
V
=
D
D
D
N
G
r
o
7
.
2
-
3
.
2
0
4
V
D
D
V
(
I
V
,
O
)
V
6
.
3
0
4
D
D
n
i
e
s
a
e
r
c
n
I
I
D
D
t
u
p
n
i
r
e
p
V
H
I
V
=
D
D
,
V
6
.
0
-
V
t
a
st
u
p
n
I
D
D
D
N
G
r
o
0
0
4
Notes:
1. Not Guaranteed
2. Duration of test must not exceed 1 second with only 1 output tested at a time.
Electrical Characteristics over Recommended Operating Free-Air Temperature Range
(unless otherwise noted).
DC Characteristics (2.3V<V
DD
2.7V)
PDF 
ZIP