PI74LCX541
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
Fast CMOS 3.3V 8-Bit
Buffer/Line Driver
Product Features
• Functionally compatible with FCT3, LVT, and 74 series
541 families of products
• Tri-State outputs
• 5V Tolerant inputs and outputs
• 2.0V-3.6V V
CC
supply operation
• Balanced sink and source output drives (24 mA)
• Low ground bounce outputs
• Supports live insertion
• ESD Protection exceeds 2000V, Human Body Model
200V, Machine Model
• Packages available:
– 20-pin 209-mil wide plastic SSOP (H)
– 20-pin 173-mil wide plastic TSSOP (L)
– 20-pin 150-mil wide plastic QSOP (Q)
– 20-pin 300-mil wide plastic SOIC (S)
Product Description
Pericom Semiconductor’s PI74LCX series of logic circuits are
produced in the Company’s advanced 0.6 micron CMOS technology
achieving high speed while maintaining low power operation.
The PI74LCX541 is an 8-bit buffer/line driver designed for driving
high capacitive 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 offers a
flow-through organization for ease of board layout.
The PI74LCX541 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.
Logic Block Diagram
OE
A
OE
B
Product Pin Configuration Product Pin Description
Pin Name
OE
A
D0
O1
D2
Description
3-State Output Enable, Inputs (Active LOW)
Inputs
Outputs
Ground
Power
D
0
D
1
O
0
O
1
D3
D4
D5
D6
D7
D
2
O
2
GND
1
20
2
19
3
18
4
20-Pin
17
H20
16
5
L20
15
6
Q20
7
14
S20
8
13
9
12
10
11
V
CC
OE
B
O0
O1
O2
O3
O4
O5
O6
O7
OE
A
, OE
B
D0-D7
O0-O7
GND
V
CC
D
3
O
3
D
4
O
4
Truth Table
(1)
Inputs
Outputs
D
X
L
H
X
X
O
X
L
H
Z
Z
OE
A
L
L
OE
B
L
L
X
H
D
5
D
6
O
5
O
6
D
7
O
7
H
X
Note:
1. H = High Voltage Level, X = Don’t Care,
L = Low Voltage Level, Z = High Impedance
1
PS2101B
07/22/99
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LCX541
3.3V 8-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 & Vcc 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
Power Dissipation .................................................................................... 1.0W
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the de-
vice. This is a stress rating only and functional opera-
tion 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.
Recommended Operating Conditions
Symbol
V
CC
V
I
V
O
I
OH
/I
OL
T
A
Parame te r
Supply Voltage
Input Voltage
O utput Voltage
O utput Current
HIGH or LO W State
TRI- State
V
CC
= 3.0V- 3.6V
V
CC
= 2.7V
Free- Air O perating Temperature
Input Edge Rate
V = 0.8V- 2.0V, V
CC
= 3.0V
O perating
Data Retention
M in.
2.0
1.5
0
0
0
−
40
0
M ax.
3.6
3.6
5.5
V
CC
5.5
±24
±12
+85
10
mA
°C
ns/V
V
Units
∆
t/
∆
V
2
PS2101B
07/22/99
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LCX541
3.3V 8-Bit Buffer/Line Driver
DC Electrical Characteristics
(Over the Operating Range, T
A
=
−40°C
to +85°C, V
CC
= 2.7V to 3.6V)
Parame te rs
V
IH
V
IL
V
OH
D e s cription
Input HIGH Voltage
Input LO W Voltage
O utput HIGH Voltage
Te s t Conditions
(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LO W Level
V
CC
= 2.7- 3.6
V
CC
= 2.7
V
CC
= 3.0
I
OH
= 0.1mA
I
OH
= 12mA
I
OH
= 18mA
I
OH
= 24mA
V
OL
O utput LO W Voltage
V
CC
= 2.7- 3.6
V
CC
= 2.7
V
CC
= 3.0
I
OL
= 0.1mA
I
OL
= 12mA
I
OL
= 16mA
I
OL
= 24mA
V
IK
I
I
I
OZ
I
OFF
I
CC
Clamp Diode Voltage
Input Leakage Current
Tri- State O utput Leakage
Power Down Disable
Q uiescent Power Supply
Current
Q uiescent Power Supply
Current
TTL Inputs HIGH
V
CC
= Min., I
IN
= 18mA
0
≤
V
I
≤
5.5V
0
≤
V
O
≤
5.5V
V
I
= V
IH
or V
IL
V
CC
= 2.7- 3.6
V
CC
= 2.7- 3.6
M in.
2.0
V
CC
- 0.2
2.2
2.4
2.2
Typ
(2)
−
0.7
0.1
M ax.
0.8
0.2
0.4
0.4
0.55
−
1.2
±5
±5
10
10
500
V
Units
V
CC
= 0V, V
IN
or V
OUT
≤
5.5V
V
CC
= Max.
V
CC
= Max.
V
IN
= GND or V
CC
V
IN
= V
CC
0.6V
(3)
µA
∆
I
CC
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 3.3V, +25°C ambient.
3. Per TTL driven input; all other inputs at V
CC
or GND.
Capacitance
Parame te rs D e s cription
C
IN
C
OUT
C
PD
Input Capacitance
O utput Capacitance
Power Dissipation Capacitance
Te s t Conditions
V
CC
= O pen, V
I
= 0V or V
CC
V
CC
= 3.3V, V
I
= 0V or V
CC
V
CC
= 3.3V, V
I
= 0V or V
CC
, F = 10 MHz
Typ.
7
8
25
pF
Units
3
PS2101B
07/22/99
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LCX541
3.3V 8-Bit Buffer/Line Driver
Switching Characteristics over Operating Range
V
CC
= 3.3V ± 0.3V
Parame te rs
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
SK
(
O
)
D e s cription
Propagation Delay
D
XX
to O
XX
O utput Enable time
O utput Disable Time
O utput Skew
(1)
Conditions
C
L
= 50pF
R
L
= 500
Ω
M in.
1.5
1.5
1.5
M ax.
6.5
8.5
7.5
1.0
V
CC
= 2.7V
M in.
1.5
1.5
1.5
M ax.
7.5
9.5
ns
8.5
Units
Note:
1. Skew between any two outputs, of the same package, switching in the same direction.
Dynamic Switching Characteristics
(T
A
=
+25°C)
Parame te rs
V
OLP
V
OLV
D e s cription
Dynamic LO W Peak Voltage
Dynamic LO W Valley Voltage
Te s t Conditions
(1)
V
CC
= 3.3V, C
L
= 50pF
V
IH
= 3.3V, V
IL
= 0V
V
CC
= 3.3V, C
L
= 50pF
V
IH
= 3.3V, V
IL
= 0V
Typ.
Units
0.8
V
Note:
1. Measured with n–1 outputs switching from High-to-Low or Low-to-High. The remaining output is measured in the LOW state.
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
4
PS2101B
07/22/99
Test/Measurement
京公网安备 11010802033920号
EEWORLD
