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PI74LCX541
Fast CMOS 3.3V 8-Bit
Buffer/Line Driver
Logic Block Diagram
Product Pin Configuration Product Pin Description
OEA
D0
O1
D2
D3
D4
D5
D6
D7
GND
V
CC
OEB
O0
O1
O2
O3
O4
O5
O6
O7
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
20-Pin
H20
L20
Q20
S20
Truth Table
(1)
Note:
1. H = High Voltage Level, X = Don’t Care,
L = Low Voltage Level, Z = High Impedance
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 VCC 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.
OE
A
D
0
O
0
OE
B
D
1
O
1
D
2
O
2
D
3
O
3
D
4
O
4
D
5
O
5
D
6
O
6
D
7
O
7
emaNniPnoitpircseD
EO
A
EO,
B
)WOLevitcA(stupnI,elbanEtuptuOetatS-3
7D-0DstupnI
7O-0OstuptuO
DNGdnuorG
V
CC
rewoP
stupnIstuptuO
EO
A
EO
B
D
X
O
X
LL LL
LLHH
HX XZ
XH XZ

PI74LCX541
3.3V 8-Bit Buffer/Line Driver
2
PS2101B 07/22/99
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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
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 reliability.
lobmySretemaraP .niM.xaMstinU
V
CC
egatloVylppuSgnitarepO0.26.3
V
noitneteRataD5.16.3
V
I
egatloVtupnI 05.5
V
O
egatloVtuptuOetatSWOLroHGIH0V
CC
etatS-IRT05.5
I
HOI/LO
tnerruCtuptuOV
CC
=V6.3-V0.3
42±
Am
V
CC
=V7.2
21±
T
A
erutarepmeTgnitarepOriA-eerF
− 04
58+
°C
∆/t∆
V
etaRegdEtupnIV,V0.2-V8.0=V
CC
V0.3=001V/sn
Recommended Operating Conditions
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

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PI74LCX541
3.3V 8-Bit Buffer/Line Driver
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 VCC or GND.
sretemaraPnoitpircseDsnoitidnoCtseT
)1(
.niMpyT
)2(
.xaMstinU
V
HI
egatloVHGIHtupnIleveLHGIHcigoLdeetnarauG0.2
V
V
LI
egatloVWOLtupnIleveLWOLcigoLdeetnarauG8.0
V
HO
egatloVHGIHtuptuOV
CC
6.3-7.2=I
HO
Am1.0=V
CC
2.0-
V
CC
7.2=I
HO
Am21=2.2
V
CC
0.3=I
HO
Am81=4.2
I
HO
Am42=2.2
V
LO
egatloVWOLtuptuOV
CC
6.3-7.2=I
LO
Am1.0=2.0
V
CC
7.2=I
LO
Am21=4.0
V
CC
0.3=I
LO
Am61=4.0
I
LO
Am42=55.0
V
KI
egatloVedoiDpmalCV
CC
,.niM=INIAm81=
− 7.0 − 2.1
I
I
tnerruCegakaeLtupnI0≤ VI≤ V5.5V
CC
6.3-7.2=5±
Aµ
I
ZO
egakaeLtuptuOetatS-irT0≤ VO≤ V5.5
VIV=
HI
Vro
LI
V
CC
6.3-7.2=5±
I
FFO
elbasiDnwoDrewoPV
CC
,V0=VNIVro
TUO
≤ V5.501
I
CC
ylppuSrewoPtnecseiuQ
tnerruC
V
CC
.xaM=V
NI
VroDNG=
CC
1.001
∆
I
CC
ylppuSrewoPtnecseiuQ
tnerruC
HGIHstupnILTT
V
CC
.xaM=V
NI
V=
CC
V6.0
)3(
005
sretemaraPnoitpircseDsnoitidnoCtseT.pyTstinU
C
NI
ecnaticapaCtupnIV
CC
V,nepO=
I
VroV0=
CC
7
FpC
TUO
ecnaticapaCtuptuOV
CC
V,V3.3=
I
VroV0=
CC
8
C
DP
ecnaticapaCnoitapissiDrewoPV
CC
V,V3.3=
I
VroV0=
CC
,zHM01=F52
Capacitance
DC Electrical Characteristics (Over the Operating Range, T
A
= −40°C to +85°C, VCC = 2.7V to 3.6V)

PI74LCX541
3.3V 8-Bit Buffer/Line Driver
4
PS2101B 07/22/99
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Note:
1. Skew between any two outputs, of the same package, switching in the same direction.
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
Switching Characteristics over Operating Range
Dynamic Switching Characteristics (T
A
= +25°C)
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.
sretemaraPnoitpircseDsnoitidnoC
V
CC
V3.0±V3.3=V
CC
V7.2=
stinU.niM.xaM.niM.xaM
t
HLP
t
LHP
yaleDnoitagaporP
D
XX
Oot
XX
C
L
Fp05=
R
L
005= Ω
5.15.65.15.7
sn
t
HZP
t
LZP
emitelbanEtuptuO5.15.85.15.9
t
ZHP
t
ZLP
emiTelbasiDtuptuO5.15.75.15.8
t
KS
(O)wekStuptuO
)1(
0.1
sretemaraPnoitpircseDsnoitidnoCtseT
)1(
.pyTstinU
V
PLO
egatloVkaePWOLcimanyDV
CC
C,V3.3=
L
Fp05=
V
HI
V,V3.3=
LI
V0=
8.0V
V
VLO
egatloVyellaVWOLcimanyDV
CC
C,V3.3=
L
Fp05=
V
HI
V,V3.3=
LI
V0=