PI74AUC16244K [PERICOM]
1.8V 16-Bit Buffer/Driver with 3-State Outputs; 1.8V 16位缓冲器/驱动器，具有三态输出
| 型号： | PI74AUC16244K |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | 1.8V 16-Bit Buffer/Driver with 3-State Outputs |
| 文件： | 总7页 (文件大小：369K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI74AUC16244
1.8V 16-Bit Buffer/Driver
with 3-State Outputs
Features
Description
• PI74AUC16244 is designed for low-voltage operation,
Pericom Semiconductor’s PI74AUC series of logic circuits are
produced using the Company’s advanced submicron CMOS
technology, achieving industry leading speeds.
V
= 0.8V to 2.7V, optimized at 1.8V.
CC
• 3.6V I/O Tolerant inputs and outputs
• I supports partial power-down operation
The PI74AUC16244 is a 16-bit buffer driver designed specifically
to improve both the performance and density of 3-state memory
address drivers, clock drivers and bus-oriented receivers and
transmitters.
OFF
• Latch-Up Performance exceeds 100mA per JESD 78
• ESD Protection Exceeds JESD 22
– 2000V Human-Body Model (A114-B)
– 200V Machine Model (A115-A)
The device can be used as four 4-bit buffers, two 8-bit buffers, or
one16-bitbuffer.Itprovidesnon-invertingoutputsandsymmetrical
active-low output-enable OE inputs.
• Industrial operation: –40°C to +85°C
To ensure the high-impedance state during power-up or power
• Packaging:
– 48-pin TSSOP (A)
– 48-pin TSSOP (K)
-down, OE should be tied to V through a pull-up resistor; the
CC
minimum value of the resistor is determined by the current-sinking
ability of the driver.
ThePI74AUC16244isspecifiedforpartialpowerdownapplications
usingI
TheI
circuitrydisablestheoutputspreventingcurrent
OFF.
OFF
backflow through the device when it is powered down.
Block Diagram
1
25
1OE
3OE
2
13
47
36
1A1
1Y1
1Y2
1Y3
1Y4
3A1
3A2
3A3
3A4
3Y1
3Y2
3Y3
3Y4
3
14
46
35
1A2
5
16
17
44
33
32
1A3
6
43
1A4
48
24
30
2OE
4OE
4A1
8
9
19
20
41
40
2A1
2A2
2A3
2A4
2Y0
2Y1
2Y2
2Y3
4Y1
4Y2
4Y3
4Y4
29
4A2
4A3
4A4
11
12
22
23
38
37
27
26
PS8731
08/16/04
A
PI74AUC16244
1.8V 16-Bit Buffer Driver
with 3-State Outputs
Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.)
Notes:
Supply voltage range, V
–0.5V to +3.6V
–0.5V to +3.6V
CC ..................................
(1)
1. Input negative voltage & output voltage ratings may be
exceeded if the input and output current rating are observed.
2. This value is limited to 3.6V maximium.
3. The package thermal impedance is calculated in accordance with
JESD 51.
Input voltage range, V
I
.....................................
Voltage range applied to any output in the
(1)
high-impedance or power-off state, V
.... –0.5V to +3.6V
O
(1, 2)
Output voltage range V
............... –0.5V to V +0.5V
CC
O
4. Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the device.
Thisisastressratingonlyandfunctionaloperationofthedeviceatthese
oranyotherconditionsabovethoseindicatedintheoperationalsections
of this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect reliability.
Input clamp current, I (V < 0).................................. –50mA
IK
I
Output clamp current, I (V < 0)............................. –50mA
OK
O
Continuous output current, I .................................... ±20mA
O
Continuous current through each V or GND ......... ±100mA
CC
(3)
Package thermal impedance, θ
: package A........ 104°C/W
package K........ 107°C/W
JA
Storage Temperature range, T ....................–65°C to 150°C
stg
Pin Description
Pin Configuration
Pin Name
Description
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ꢀꢆ
ꢀꢅ
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OE
3-State Output Enable Inputs (Active LOW)
X
X
X
ꢀ
A
Y
Inputs
X
X
ꢁ
�ꢋꢀ
�ꢑꢀ
3-State Outputs
Ground
ꢂ
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GND
ꢃ
V
Power
CC
ꢄ
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Truth Table
ꢇ
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ꢀꢂ
Inputs
Outputs
ꢌꢍꢎ
ꢌꢍꢎ
ꢀꢋꢁ
ꢀꢋꢂ
ꢀꢑꢁ
ꢀꢑꢂ
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ꢁꢑꢀ
ꢌꢍꢎ
OE
L
A
H
L
Y
H
L
X
X
X
X
X
ꢁꢋ�
L
ꢁꢋꢀ
H
X
ꢌꢍꢎ
Note:
1. H = High Signal Level, L = Low Signal Level
ꢁꢋꢁ
ꢁꢑꢁ
ꢁꢋꢂ
ꢁꢑꢂ
X = Don’t Care or Irrelevant, Z = High Impedance
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ꢏꢐꢐ
ꢂꢋ�
ꢂꢋꢀ
ꢂꢑ�
ꢂꢑꢀ
ꢌꢍꢎ
ꢂꢋꢁ
ꢌꢍꢎ
ꢂꢑꢁ
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ꢂꢉꢊ
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PS8731
08/16/04
2
PI74AUC16244
1.8V 16-Bit Buffer Driver
with 3-State Outputs
(1)
Recommended Operating Conditions
Parameters
Description
Operating Conditions
Min.
Max.
Units
V
V
SupplyVoltage
0.8
2.7
CC
V
V
V
V
V
V
= 0.8V
V
CC
CC
CC
CC
CC
CC
CC
High-Level Input Voltage
Low-Level Input Voltage
= 1.1V to 1.95V
= 2.3V to 2.7V
= 0.8V
0.65 x V
1.7
IH
CC
0
0.35 x V
0.7
V
V
= 1.1V to 1.95V
= 2.3V to 2.7V
IL
CC
V
V
Input Voltage
0
0
0
3.6
I
Active State
3-state
V
CC
Output Voltage
O
3.6
V
V
V
V
V
V
V
V
V
V
= 0.8V
= 1.1V
= 1.4V
= 1.65V
= 2.3V
= 0.8V
= 1.1V
= 1.4V
= 1.65V
= 2.3V
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
I
I
High-Level Output Current
Low-Level Output Current
OH
mA
OL
∆t/∆v
Input Transition Rise or Fall Rate
Operating Free-Air Temperature
5
ns/V
°C
T
A
-40
85
Note:
1. All unused inputs must be held at VCC or GND to ensure proper device operation.
PS8731
08/16/04
3
PI74AUC16244
1.8V 16-Bit Buffer Driver
with 3-State Outputs
DC Electrical Characteristics (Over the Operating Range, T = –40°C +85°C)
A
(1)
(1)
Parameters
Test Conditions
= -100µA
= -0.7mA
= -3mA
V
Min.
V -0.1V
CC
Typ.
Max.
Units
CC
I
I
I
I
I
I
I
I
I
I
I
I
0.8V to 2.7V
0.8V
OH
OH
OH
OH
OH
OH
OL
OL
OL
OL
OL
OL
0.55
1.1V
0.8
1
V
OH
= -5mA
1.4V
= -8mA
1.65V
1.2
1.8
= -9mA
2.3V
V
= 100µA
= 0.7mA
= 3mA
0.8V to 2.7V
0.8V
0.2
0.25
1.1V
0.3
0.4
0.45
0.6
±5
V
OL
= 5mA
1.4V
= 8mA
1.65V
= 9mA
2.3V
(2)
I
I
I
I
V = V or GND
0 to 2.7V
0V
I
I
CC
V or V = 2.7V
±10
±10
20
OFF
OZ
I
O
µA
pF
V = V or GND
0.8V to 2.7V
0.8V to 2.7V
2.5V
O
CC
V = V or GND, I = 0
CC
I
CC
O
C
C
V = V or GND
3
4
I
I
CC
V = V or GND
2.5V
O
O
CC
Note:
1. Typical values are measured at TA = 25°C.
2. II - A Port or OE inputs.
Switching Characteristics
(Over recommended operating free-air temperature range, unless otherwise noted, see Figure 1)
V
=
V
= 1.2V
± 0.1V
V
= 1.5V
± 0.1V
V
= 1.8V
± 0.15V
V
= 2.5V
CC
± 0.2V
CC
CC
CC
CC
From
(Input) (Output)
To
0.8V
Typ.
5.4
8
Parameters
Units
Min. Max. Min.
Max. Min. Typ. Max. Min. Max.
tpd
ten
tdis
A
Y
Y
Y
0.8
1
2.8
4.4
4.9
0.6
0.7
1
1.9
2.6
4.6
0.7
0.8
1.5
1.3
1.4
2.6
1.8
2.5
4
0.5
0.6
0.5
1.8
1.9
3
OE
OE
ns
12
1.9
Operating Characteristics, T = 25°C
A
V
= 0.8V
V
= 1.2V
V
= 1.5V
V
= 1.8V
V = 2.5V
CC
CC
CC
CC
CC
Test
Parameters
Units
Conditions
Typical
Typical
Typical
Typical
Typical
Outputs
Enabled
21
22
23
25
30
Cpd Power
Dissipation
Capacitance
C = 0pF,
f = 10 MHz
L
pF
Outputs
Disabled
1
1
1
1
1
PS8731
08/16/04
4
PI74AUC16244
1.8V 16-Bit Buffer Driver
with 3-State Outputs
Parameter Measurement Information
2xVCC
Open
GND
Test
/t
S1
S1
RL
From Output
Under Test
t
t
Open
2 x V
CC
PLH PHL
/t
PLZ PZL
t
/t
GND
PHZ PZH
CL
RL
(See Note 1)
V
C
R
L
V∆
CC
L
0.8V
15pF
15pF
15pF
30pF
30pF
2kΩ
2kΩ
2kΩ
1kΩ
500Ω
0.1V
0.1V
0.1V
0.15V
0.15V
1.2V ± 0.1V
1.5V ± 0.1V
1.8V ± 0.15V
2.5V ± 0.2V
Load Circuit
V
CC
CC
Timing
Input
V
/2
CC
0V
t
t
h
su
tW
V
CC
V
V
/2
V
/2
Data
Input
Input
CC
CC
V
/2
V
/2
CC
CC
0V
0V
Voltage Waveforms Pulse Duration
Voltage Waveforms Setup and Hold Times
VCC
Output
Control
(Low Level
Enabling)
VCC/2
VCC/2
tPLZ
VCC
0V
VCC/2
tPLH
VCC/2
tPHL
Input
tPZL
0V
Output
Waveform 1
S1 at 2 x VCC
(see Note 2)
VCC
VCC/2
VOH
VOL +V∆
tPHZ
VOL
VOH
/2
VCC
VCC/2
tPZH
Output
Output
VOL
VOH
Output
Waveform 2
S1 at GND
(see Note 2)
tPHL
tPLH
VOH –V∆
VCC/2
/2
/2
VCC
VCC
0V
VOL
Voltage Waveforms Propagation Delay Times
Voltage Waveforms Enable and Disable Times
Figure 1. Load Circuit and Voltage Waveforms
Notes:
1. CL includes probe and jig capacitance.
2. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
3. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50Ω, slew rate ≥ 1V/ns
4. The outputs are measured one at a time with one transition per measurement.
5. tPLZ and tPHZ are the same as tdis
6. tPZL and tPZH are the same as ten
7. tPLH and tPHL are the same as tpd
8. All parameters and waveforms are not applicable to all devices.
PS8731
08/16/04
5
PI74AUC16244
1.8V 16-Bit Buffer Driver
with 3-State Outputs
Packaging Mechanical: 48-pin TSSOP (A)
48
.236
.244
6.0
6.2
1
.488 12.4
.496 12.6
.047
1.20 Max
SEATING PLANE
0.09
0.20
.004
.008
0.45 .018
0.75 .030
.002
.006
0.05
0.15
.007
.010
.0197
BSC
.319
BSC
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
0.50
0.17
0.27
8.1
Packaging Mechanical: 48-pin TSSOP (K)
48
.169
.177
4.30
4.50
0.09
0.20
.0035
.008
1
.031
.041
0.80
1.05
0.45 .018
0.75 .030
.252
BSC
6.4
.378 9.60
.386 9.80
SEATING
PLANE
Max.
.047
1.20
.002
.006
0.05
0.15
.016
BSC
.0051
.009
0.13
0.23
0.40
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
PS8731
08/16/04
6
PI74AUC16244
1.8V 16-Bit Buffer Driver
with 3-State Outputs
Ordering Information
Ordering Code
Packaging Code
Package Description
PI74AUC16244A
A
K
48-pin TSSOP
48-pin TVSOP
PI74AUC16244K
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/.
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
PS8731
08/16/04
7
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