21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
1
2109876543212109876543210987654321098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC+16244
2.5V 16-Bit Buffer Driver
with 3-State Outputs
Product Features
• PI74AVC+16244 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
• All outputs contain a patented DDC
(Dynamic Drive Control) circuit that reduces noise without
degrading propagation delay
• Industrial operation: –40°C to +85°C
• Packaging (Pb-free & Green available):
– 48-pin 240-mil wide plastic TSSOP
– 48-pin 173-mil wide plastic TVSOP
Product Description
PI74AVC+16244 is a non-inverting 16-bit buffer/driver designed
for low-voltage 1.65V to 3.6V V
CC
operation.
The buffer/driver is designed specifically to improve both the
performance and density of 3-state memory address drivers, clock
drivers, and bus-oriented receivers and transmitters.
The device can be used as four 4-bit buffers, two 8-bit buffers, or
one 16-bit buffer. It provides non-inverting outputs and symmetri-
cal active-low output-enable (OE) inputs.
To ensure the high-impedance state during power up or power
down, OE should be tied to V
CC
through a pullup resistor in which
the minimum value is determined by the current-sinking capability
of the driver.
Logic Block Diagram
1OE
1A1
1
47
2
3OE
1Y1
3A1
25
36
13
3Y1
1A2
46
3
1Y2
3A2
35
14
3Y2
1A3
44
5
1Y3
3A3
33
16
3Y3
1A4
43
6
1Y4
3A4
32
17
3Y4
2OE
2A1
48
41
8 2Y1
9
4OE
4A1
24
30
19
4Y1
2A2
40
2Y2
4A2
29
20
4Y2
2A3
38
11
2Y3
4A3
27
22
4Y3
2A4
37
12
2Y4
4A4
26
23
4Y4
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Truth Table
nOE
L
L
H
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC+16244
2.5V 16-Bit Buffer 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 accordance with
JESD 51.
(1)
Product Pin Description
Pin Name
nOE
nAx
nYx
GND
V
CC
Inputs
3- State Outputs
Ground
Power
De s cription
3- State Output Enable Inputs (Active LOW)
Product Pin Configuration
1OE
1Y1
1Y2
GND
1Y3
1Y4
VCC
2Y1
2Y2
GND
2Y3
2Y4
3Y1
3Y2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
2OE
1A1
1A2
GND
1A3
1A4
VCC
2A1
2A2
GND
2A3
2A4
3A1
3A2
GND
3A3
3A4
VCC
4A1
4A2
GND
4A3
4A4
3OE
Inputs
nAx
H
L
X
Outputs
nYx
H
L
Z
GND
3Y3
3Y4
VCC
4Y1
4Y2
GND
4Y3
4Y4
4OE
Notes:
1. H = High Signal Level
L = Low Signal Level
X = Don’t Care or Irrelevant
Z = High Impedance
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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC+16244
2.5V 16-Bit Buffer 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
ΔtΔ
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 a x.
3.6
Units
Notes:
1. All unused inputs must be held at V
CC
or GND to ensure proper device operation.
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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC+16244
2.5V 16-Bit Buffer Driver
with 3-State Outputs
DC Electrical Characteristics
(Over the Operating Range, T
A
= –40°C +85°C)
Parame te rs
V
O H
Te s t Conditions
(1)
I
O H
= –100
μA
I
O HS
= –4mA
I
O HS
= –6mA
I
O HS
= –12mA
I
O HS
= –24mA
V
O L
I
O LS
= 100
μA
I
O LS
= 4mA
I
O LS
= 6mA
I
O LS
= 12mA
I
O LS
= 24mA
I
I
I
O F F
I
O Z
I
C C
C
I
Control Inputs
Data Inputs
C
O
Outputs
V
O
= V
C C
or GND
V
I
= V
C C
or GND
V
I
or V
O
= 3.6V
V
O
= V
C C
or GND
V
I
= V
C C
or GND
V
I
= V
C C
or GND
I
O
= 0
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
3 . 6V
2.5V
3.3V
2.5V
3.3V
2.5V
3.3V
3. 5
3. 5
6
6
6. 5
6. 5
pF
M in.
V
C C
–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
μ
A
V
Typ.
M ax.
Units
Notes:
1. Typical values are measured at T
A
= 25°C.
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05/31/06
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74AVC+16244
2.5V 16-Bit Buffer Driver
with 3-State Outputs
Switching Characteristics
(Over recommended operating free-air temperature range, unless otherwise noted, see Figures 1 thru 4)
Parame te rs
t
pd
t
en
t
dis
From
(Input)
A
OE
OE
To
(Output)
Y
Y
Y
V
CC
= 1.2V
Typ.
3.1
7 .6
7 .2
V
CC
= 1.5V
± 0.1V
M in.
0.6
1.4
1.7
3 .3
8
7. 3
V
CC
= 1.8V
± 0.15V
M a x.
2.9
6. 8
6. 2
0.7
1.3
1.6
V
CC
= 2.5V
± 0.2V
M in.
0 .6
0. 9
1.0
M ax.
1.9
4 .0
4.3
V
CC
= 3.3V
± 0.3V
M in.
0.5
0.7
1.0
M a x.
1.7
3. 5
3.5
Units
M ax. M in.
ns
Operating Characteristics,
T
A
= 25°C
V
CC
= 1.8V
± 0.15V
Parame te rs
Cpd Power Dissipation
Capacitance
Outputs Enabled
Outputs Disabled
Te s t Conditions
C
L
= 0pF,
f = 10 MHz
Typical
23
0. 1
V
CC
= 2.5V
± 0.2V
Typical
27
0. 1
V
CC
= 3.3V
± 0.3V
Typical
33
0. 1
Units
pF
06-0164
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