21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74VCX16374
16-Bit D-Type Flip-Flop
with 3-State Outputs
Product Features
•
The PI74VCX Family is designed for low voltage
operation, V
DD
= 1.8V to 3.6V
•
3.6V I/O Tolerant Inputs and Outputs
•
Supports Live Insertion
•
Balanced Drive, ±24mA
•
Uses patented Noise Reduction Circuitry
•
Typical V
OLP
(Output Ground Bounce)
< 0.6V at V
DD
= 2.5V, T
A
= 25ºC
•
Typical V
OHV
(Output V
OH
Undershoot)
< –0.6V at V
DD
= 2.5V, T
A
= 25ºC
•
Power-Off high impedance inputs and outputs
•
Industrial operation at –40°C to +85°C
•
Packaging (Pb-free & Green available):
– 48-pin 240 mil. wide plastic TSSOP (A)
Product Description
The PI74VCX16374 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 date
(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 V
DD
through a pullup resistor; the
minimum value of the resistor is determined by the current-
sinking capability of the driver.
The PI74VCX family is I/O Tolerant, allowing it to operate in
mixed 1.8V/3.6V systems.
Logic Block Diagram
1OE
1
1CLK
48
>C1
2
1Q1
1D1
47
1D
To Seven Other Channels
24
2OE
2CLK
25
>C1
13
2Q1
2D1
36
1D
To Seven Other Channels
06-0204
1
PS8327B
10/27/06
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74VCX16374
16-Bit D-Type Flip-Flop
with 3-State Outputs
Product Pin Description
Pin Name
OE
CLK
Dx
Qx
GND
VDD
Description
Output Enable Input (Active LOW)
Clock Input
Data Inputs
3-State Outputs
Ground
Power
Truth Table
(1)
Inputs
OE
L
L
L
H
CLK
↑
↑
H or L
X
D
H
L
X
X
Outputs
Q
H
L
Q
0
Z
Product Pin Configuration
Notes:
1. H = High Signal Level
L = Low Signal Level
X = Don’t Care or Irrelevant
Z = High Impedance
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1OE
1Q1
1Q2
GND
1Q3
1Q4
VDD
1Q5
1Q6
GND
1Q7
1Q8
2Q1
2Q2
GND
2Q3
2Q4
VDD
2Q5
2Q6
GND
2Q7
2Q8
2OE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1CLK
1D1
1D2
GND
1D3
1D4
VDD
1D5
1D6
GND
1D7
1D8
2D1
2D2
GND
2D3
2D4
VDD
2D5
2D6
GND
2D7
2D8
2CLK
06-0204
2
PS8327B
10/27/06
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74VCX16374
16-Bit D-Type Flip-Flop
with 3-State Outputs
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
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 Output Source/Sink Current (I
OH
/I
OL
) ............................ ±50mA
DC V
DD
or GND Current per Supply Pin (I
CC
or GND) .... ±100mA
Storage Temperature Range, T
STG
............................ –65°C to150°C
Notes:
1. Absolute maximum of I
O
must be observed.
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 reli-
ability.
Recommended Operating Conditions
(1)
Parame te rs
V
DD
V
IH
V
IL
V
I
V
O
De s cription
Supply voltage
Data Retention Only
High- level input voltage
Low- level input voltage
Input voltage
Active State
Output voltage
Off State
Output current in I
OH
/I
OL
Δ
t/
Δv
T
A
V
DD
= 3.0V to 3.6V
V
DD
= 2.3V to 2.7V
V
DD
= 1.8V
0
−
40
0
V
DD
= 2.7V to 3.6V
V
DD
= 2.7V to 3.6V
- 0.3
0
1. 2
2. 0
0.8
3 .6
V
DD
3.6
± 24
±18
±6
10
85
mA
ns/V
C
V
3.6
Conditions
Operating
M in.
1. 8
M a x.
3.6
Units
Input transistion rise or fall rate
(2)
Operating free- air temperature
Notes:
1. Unused control inputs must be held HIGH or LOW to prevent them from floating.
2 As measured between 0.8V and 2.0V, V
DD
= 3.0V.
06-0204
3
PS8327B
10/27/06
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74VCX16374
16-Bit D-Type Flip-Flop
with 3-State Outputs
Electrical Characteristics over Recommended Operating Free-Air Temperature Range
(unless otherwise noted)
DC Characteristics (2.7V < V
DD
≤
3.6V)
Parame te rs
V
IH
V
IL
De s cription
HIGH Level Input Voltage
LOW Level Input Voltage
I
OH
=
−
100
μA
V
OH
HIGH Level
Output Voltage
I
OH
=
−
12mA
I
OH
=
−
18mA
I
OH
=
−
24mA
I
OL
= 100
μA
V
OL
LOW Level
Output Voltage
I
OL
= 12mA
I
OL
= 18mA
I
OL
= 24mA
I
I
I
OZ
I
OFF
I
DD
ΔI
DD
Input Leakage Current
3- STATE Output
Leakage
Power- OFF
Leakage Current
Quiescent Supply Current
V
I
= 0.0V, V
1
= 3.6V
0
≤
V
O
≤
3.6V
V
I
= V
IH
or V
IL
0
≤
(V
I
,V
O
)
≤
3.6V
V
I
= V
DD
to GND
V
DD
≤
(V
I
,V
O
)
≤
3.6V
V
IH
= V
DD
- 0.6V,
Other inputs at V
DD
or GND
2.7 - 3.6
3 .6
2.7 - 3.6
0
2. 7
3.0
2 .2
2.7 - 3.6
2.7
3 .0
0.2
0 .4
0.4
0. 5
± 5. 0
±10
10
20
± 20
750
2.7 - 3.6
V
DD
- 0.2
2.2
2.4
V
Conditions
V
DD
M in.
2.0
0.8
Typ.
M a x.
Units
μA
Increase in I
DD
per input
06-0204
4
PS8327B
10/27/06
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74VCX16374
16-Bit D-Type Flip-Flop
with 3-State Outputs
DC Characteristics
(2.3V
≤
V
DD
≤
2.7V)
Parame te rs
V
IH
V
IL
De s cription
HIGH Level Input Voltage
LOW Level Input Voltage
Conditions
V
DD
M in.
1.6
Typ.
M ax.
Units
2.3 - 2.7
I
OH
= - 100
μA
V
DD
- 0.2
2.3
2 .0
1.8
1.7
2 . 3 - 2 .7
2.3
0.7
V
OH
HIGH Level Output Voltage
I
OH
= - 6mA
I
OH
= - 12mA
I
OH
= - 18mA
I
OL
= 100
μA
V
0.2
0.4
0. 4
V
OL
LOW Level Output Voltage
I
OL
= 12mA
I
OL
= 18mA
I
I
I
OZ
I
OFF
I
DD
Input Leakage Current
3- STATE Output Leakage
V
1
= 0.0V, V
1
= 2.7V
0
≤
V
O
≤
3.6V
V
I
= V
IH
or V
IL
2 .7
2.3 - 2.7
0
2.3 - 2.7
± 5 .0
±10
10
20
± 20
μA
Power- OFF Leakage Current 0
≤
(V
I
,V
O
)
≤
3.6V
V
I
= V
DD
or GND
Quiescent Supply Current
V
DD
≤
(V
I
,V
O
)
≤
3.6V
DC Characteristics
(1.8V
≤
V
DD
≤
2.3V)
Parame te rs
V
IH
V
IL
V
OH
De s cription
HIGH Level Input Voltage
1.8 - 2.3
LOW Level Input Voltage
HIGH Level Output Voltage
I
OH
= - 100
μA
I
OH
= - 6mA
V
OL
LOW Level Output Voltage
I
OL
= 100
μA
I
OL
= 6mA
I
I
I
OZ
I
OFF
I
DD
Input Leakage Current
3- STATE Output Leakage
Power- OFF Leakage Current
Quiescent Supply Current
V
1
= 0.0V, V
1
= 1.8V
0
≤
V
O
≤
3.6V
V
I
= V
IH
or V
IL
0
≤
(V
I
,V
O
)
≤
3.6V
V
I
= V
DD
or GND
V
DD
≤
(V
I
,V
O
)
≤
3.6V
0
1.8
1.8
1.8
V
DD
- 0.2
1.4
0.2
0.3
± 5.0
±10
10
20
± 20
μA
Conditions
V
DD
M in.
0.7 x V
DD
0.2 x V
DD
V
Typ.
M a x.
Units
06-0204
5
PS8327B
10/27/06
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