PI74LCX16244
Fast CMOS 3.3V 16-Bit Buffer/Line Driver
Features
Description
• Functionally compatible with FCT3, LVT, and 74 series
16244 families of products
• 3-State outputs
• 5V Tolerant inputs and outputs
• 2.0V – 3.6V VDD supply operation
• Balanced sink and source output drives (24mA)
• Low ground bounce outputs
• Power Down High Impedance inputs and outputs
• Supports live insertion
• ESD Protection exceeds 2000V, Human Body Model
200V, Machine Model
• Packaging (Pb-free & Green Available):
– 48-pin 300-mil wide plastic SSOP (V)
– 48-pin 240-mil wide plastic TSSOP (A)
Pericom Semiconductor’s PI74LCX16244 is a 16-bit buffer/line
driver designed for driving memory loads. With its balanced-drive
characteristics, this high-speed, low power device provides lower
ground bounce, transmission line matching of signals, fewer line
reflections and lower EMI and RFI effects. This makes it ideal
for driving on-board buses and transmission lines. This device is
designed with three-state controls to operate in a Quad-Nibble,
Dual-Byte, or a single 16-bit word mode.
The PI74LCX16244 can be driven from either 3.3V or 5.0V
devices allowing this device to be used as a translator in a mixed
3.3V/5.0V system.
Block Diagram
1OE
3OE
1A0
1Y0
3A0
3Y0
1A1
1Y1
3A1
3Y1
1A2
1Y2
3A2
3Y2
1A3
1Y3
3A3
3Y3
2OE
09-0005
4OE
2A0
2Y0
4A0
4Y0
2A1
2Y1
4A1
4Y1
2A2
2Y2
4A2
4Y2
2A3
2Y3
4A3
4Y3
1
PS2087H
11/10/09
PI74LCX16244
3.3V 16-Bit Buffer/Line Driver
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ............................................................. –65°C to +150°C
Ambient Temperature with Power Applied ............................ –40°C to +85°C
Supply Voltage to Ground Potential (Inputs & VDD Only) ..... –0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) ... –0.5V to +7.0V
DC Input Voltage ..................................................................... –0.5V to +7.0V
DC Output Current............................................................................... 120 mA
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause per ma nent 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.
Power Dissipation .................................................................................... 1.0W
Recommended Operating Conditions
Parameter
VDD
Supply Voltage
VI
Input Voltage
VO
Output Voltage
IOH/IOH
Output Current
TA
∆t/∆V
09-0005
Description
Min.
Max.
Operating
2.0
3.6
Data Retention
1.5
3.6
0
5.5
HIGH or LOW state
0
VDD
3-state
0
5.5
VDD = 3.0V - 3.6V
±24
VDD = 2.7V
±12
Operating Temperature
Input Edge Rate
V = 0.8V - 2.0V, VDD = 3.0V
2
Units
V
mA
-40
85
°C
0
10
ns/V
PS2087H
11/10/09
PI74LCX16244
3.3V 16-Bit Buffer/Line Driver
Truth Table(1)
Pin Description
Pin Name
Description
Inputs
Output
XOE
3-State Output Enable Inputs (Active LOW)
XOE
XA X
X YX
XAX
Inputs
L
L
L
XYX
3-State Outputs
L
H
H
GND
Ground
H
X
Z
VDD
Power
Notes:
1. H = High Voltage Level, X = Don’t Care,
L = Low Voltage Level, Z = High Impedance
Pin Configuration
1OE
1
2
48
47
2OE
3
4
46
45
1A1
44
43
1A2
1Y3
5
6
VDD
7
42
VDD
8
9
10
41
40
39
2A0
11
12
38
37
2A2
13
14
15
16
36
35
34
33
3A0
17
18
32
31
19
30
20
21
22
29
28
27
23
24
26
25
1 Y0
1 Y1
GND
1 Y2
2Y0
2Y1
GND
2 Y2
2 Y3
3 Y0
3 Y1
GND
3Y2
3Y3
VDD
4Y0
4Y1
GND
4 Y2
4 Y3
4OE
09-0005
1A0
GND
1A3
2A1
GND
2A3
3A1
GND
3A2
3A3
VDD
4A0
4A1
GND
4A2
4A3
3OE
3
PS2087H
11/10/09
PI74LCX16244
3.3V 16-Bit Buffer/Line Driver
DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VDD = 2.7V to 3.6V)
Parameters
Test Conditions(1)
Description
VIH
Input HIGH Voltage
Guaranteed Logic HIGH Level
VIL
Input LOW Voltage
Guaranteed Logic LOWLevel
VOH
Output HIGH Voltage
Output LOW Voltage
Typ.(2)
Max.
0.8
VDD = 2.7 - 3.6
IOH = -0.1mA
VDD -0.2
IOH = -12mA
2.2
IOH = -18mA
2.4
IOH = -24mA
2.2
V
VDD =2.7 - 3.6
IOL = 0.1mA
0.2
VDD = 2.7
IOL = 12mA
0.4
IOL = 16mA
0.4
IOL = 24mA
0.55
VDD = 3.0
Units
2.0
VDD = 2.7
VDD = 3.0
VOL
Min.
VIK
Clamp Dioide Voltage
VDD = Min., IIN = -18mA
II
Input Leakage Current
0 ≤ VI ≤ 5.5V
VDD = 2.7 -3.6
±5
IOZ
Tri-State Output Leakage
0 ≤ VO ≤ 5.5V
VI = VIH or VIL
VDD = 2.7 -3.6
±5
IOFF
Power Down Disable
VDD = 0V, VIN or VOUT ≤ 5.5V
IDD
Quiescent Power supply current
VDD = Max.
VIN = GND or VDD
∆IDD
Quiescent Power supply current
TTL Inputs High
VDD = Max.
VIN = VDD =0.6V(3)
-0.7
-1.2
10
0.1
μA
10
500
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VDD = 3.3V, +25°C ambient.
3. Per TTL driven input; all other inputs at VDD or GND.
Capacitance
Parameters
Description
Test Conditions
Typ.
CIN
Input Capacitance
VDD = Open, VI = 0V or VDD
3
COUT
Output Capacitance
VDD = 3.3V, VI = 0V or VDD
3
CPD
Power Dissipation Capacitance
VDD = 3.3V, VI = 0V or VDD, F = 10 MHz
20
09-0005
4
PS2087H
Units
pF
11/10/09
PI74LCX16244
3.3V 16-Bit Buffer/Line Driver
Switching Characteristics over Operating Range
Parameters
Description
tPHL
Propagation Delay, DXX to OXX
tPZH
Output Enable time
tPHZ
Output Disable time
tsk(0)
Output Skew(1)
Test Conditions
CL = 50pF
RL = 500Ω
VDD = 3.3V±0.3
VDD = 2.7V
Min.
Max.
Min.
Max.
1.5
4.5
1.5
5.2
1.5
5.5
1.5
6.3
1.5
5.4
1.5
5.7
Units
ns
1.0
Notes:
1. Skew between any two outputs, of the same package, switching in the same direction.
Dynamic Switching Characteristics (TA = +25°C)
Parameters
Description
VOLP
Dynamic LOW peak voltage
VOLV
Dynamic LOW valley voltage
Test Conditions(1)
VDD = 3.3V, CL = 50pF,
VIH = 3.3V, VIL = 0V
Typ.
Units
0.8
V
Notes:
1. Measured with 15 outputs switching from High-to-Low or Low-to-High. The remaining output is measured in the LOW state.
09-0005
5
PS2087H
11/10/09
PI74LCX16244
3.3V 16-Bit Buffer/Line Driver
DOCUMENT CONTROL NO.
PD - 1501
48
REVISION: G
DATE: 03/09/05
.236
.244
6.0
6.2
See Note 4
1
.488 12.4
.496 12.6
See Note 3
.047
1.20 Max
SEATING PLANE
.004 0.09
.008 0.20
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
.0197
BSC
0.50
.002
.006
0.05
0.15
.007
.010
0.17
0.27
Note:
1. Controlling dimensions in millimeters.
2. Ref: JEDEC MO-153F/ED
3. Dimension does not include mold flash, protrusions or gate burrs. Mold flash, protrusions and gate burrs shall not exceed 0.15mm per side.
4. Dimension does not include interlead flash or protrusion. Interlead flash or protrusion
shall not exceed 0.25mm per side.
0.45 .018
0.75 .030
.319
BSC
8.1
Pericom Semiconductor Corporation
3545 N. 1st Street, San Jose, CA 95134
1-800-435-2335 • www.pericom.com
DESCRIPTION: 48-Pin 240-Mil Wide TSSOP
PACKAGE CODE: A
09-0005
6
PS2087H
11/10/09
PI74LCX16244
3.3V 16-Bit Buffer/Line Driver
DOCUMENT CONTROL NO.
PD - 1401
48
REVISION: E
DATE: 03/09/05
.291
.299
7.39
7.59
.395
.420
10.03
10.67
Gauge Plane
.010 0.25
.02 0.51
.04 1.01
1
.015 0.381 x 45˚
.025 0.635
.008
0.20
Nom.
.620
.630
15.75
16.00
.110 2.79 Max
0-8˚
.008 0.20
.016 0.40
.008 0.20
.0135 0.34
.025 BSC
0.635
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
Pericom Semiconductor Corporation
3545 N. 1st Street, San Jose, CA 95134
1-800-435-2335 • www.pericom.com
Notes:
1) Controlling dimensions in inches.
2) Ref: JEDEC MO-118B/AA
DESCRIPTION: 48-Pin, 300-Mil Wide, SSOP
PACKAGE CODE: V
Note:
• For latest package info, please check: http://www.pericom.com/products/packaging/mechanicals.php
Ordering Information
Ordering Code
PI74LCX16244AEX
PI74LCX16244VEX
Package Code
A
V
Package Description
Pb-free & Green, 48-pin 240 mil wide Plastic TSSOP
Pb-free & Green, 48-pin 300-mil wide plastic SSOP
Notes:
• Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
• E = Pb-free & Green
• Adding an X suffix = Tape/Reel
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
09-0005
7
PS2087H
11/10/09
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