Semiconductor Components Industries, LLC, 2005
May, 2005 − Rev. 5 1Publication Order Number:
MC74LCX125/D
MC74LCX125
Low−Voltage CMOS
Quad Buffer
With 5 V−Tolerant Inputs and Outputs
(3−State, Non−Inverting)
The MC74LCX125 is a high performance, non−inverting quad
buffer operating from a 2.3 to 3.6 V supply. High impedance TTL
compatible inputs significantly reduce current loading to input drivers
while TTL compatible outputs offer improved switching noise
performance. A V I specification of 5.5 V allows MC74LCX125 inputs
to be safely driven from 5.0 V devices. The MC74LCX125 is suitable
for memory address driving and all TTL level bus oriented transceiver
applications.
Current drive capability is 24 mA at the outputs. The Output Enable
(OEn) inputs, when HIGH, disable the outputs by placing them in a
HIGH Z condition.
Features
•Designed for 2.3 to 3.6 V VCC Operation
•5.0 V Tolerant − Interface Capability With 5.0 V TTL Logic
•Supports Live Insertion and Withdrawal
•IOFF Specification Guarantees High Impedance When VCC = 0 V
•LVTTL Compatible
•LVCMOS Compatible
•24 mA Balanced Output Sink and Source Capability
•Near Zero Static Supply Current in all Three Logic States (10 A)
Substantially Reduces System Power Requirements
•Latchup Performance Exceeds 500 mA
•ESD Performance: Human Body Model >2000 V
Machine Model >200 V
•Pb−Free Packages are Available*
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
MARKING
DIAGRAMS
TSSOP−14
DT SUFFIX
CASE 948G
14
1
SOIC−14
D SUFFIX
CASE 751A
14
1
See detailed ordering and shipping information in the package
dimensions section on page 4 of this data sheet.
ORDERING INFORMATION
http://onsemi.com
A = Assembly Location
L, WL = Wafer Lot
Y, YY = Year
W, WW = Work Week
G = Pb−Free Package
= Pb−Free Package
(Note: Microdot may be in either location)
LCX125G
AWLYWW
1
14
LCX
125
ALYW
1
14
MC74LCX125
http://onsemi.com
2
Figure 1. Pinout: 14−Lead (Top View)
1314 12 11 10 9 8
21 34567
VCC OE3D3 O3OE2D2 O2
OE0D0 O0OE1 D1 O1 GND
PIN NAMES
Function
Output Enable Inputs
Data Inputs
3−State Outputs
Pins
OEn
Dn
On
H = High Voltage Level
L = Low Voltage Level
Z = High Impedance State
X = High o r Low Voltage Level and Transitions Are
Acceptable; for ICC reasons, DO NOT FLOAT Inputs
OEn Dn On
L
L
H
L
H
X
L
H
Z
INPUTS OUTPUTS
TRUTH TABLE
D0 2O0
3
OE
0
1
D1 5O1
6
OE
1
4
D2 9O2
8
OE
2
10
D3 12 O3
11
OE
3
13
Figure 2. Logic Diagram
MAXIMUM RATINGS
Symbol Parameter Value Condition Unit
VCC DC Supply Voltage −0.5 to +7.0 V
VIDC Input Voltage −0.5 ≤ VI ≤ +7.0 V
VODC Output Voltage −0.5 ≤ VO ≤ +7.0 Output in 3−State V
−0.5 ≤ VO ≤ VCC + 0.5 Output in HIGH or LOW State. (Note 1) V
IIK DC Input Diode Current −50 VI < GND mA
IOK DC Output Diode Current −50 VO < GND mA
+50 VO > VCC mA
IODC Output Source/Sink Current ±50 mA
ICC DC Supply Current Per Supply Pin ±100 mA
IGND DC Ground Current Per Ground Pin ±100 mA
TSTG Storage Temperature Range −65 to +150 °C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. IO absolute maximum rating must be observed.
MC74LCX125
http://onsemi.com
3
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Typ Max Unit
VCC Supply Voltage Operating
Data Retention Only 2.0
1.5 2.5, 3.3
2.5, 3.3 3.6
3.6 V
VIInput Voltage 0 5.5 V
VOOutput Voltage (HIGH or LOW State)
(3−State) 0
0VCC
5.5 V
IOH HIGH Level Output Current VCC = 3.0 V − 3.6 V
VCC = 2.7 V − 3.0 V
VCC = 2.3 V − 2.7 V
− 24
− 12
− 8
mA
IOL LOW Level Output Current VCC = 3.0 V − 3.6 V
VCC = 2.7 V − 3.0 V
VCC = 2.3 V − 2.7 V
+ 24
+ 12
+ 8
mA
TAOperating Free−Air Temperature −40 +85 °C
t/VInput Transition Rise or Fall Rate, VIN from 0.8 V to 2.0 V,
VCC = 3.0 V 0 10 ns/V
DC ELECTRICAL CHARACTERISTICS
TA = −40°C to +85°C
Symbol Characteristic Condition Min Max Unit
VIH HIGH Level Input Voltage (Note 2) 2.3 V ≤ VCC ≤ 2.7 V 1.7 V
IH
g( )
2.7 V ≤ VCC ≤ 3.6 V 2.0
VIL LOW Level Input Voltage (Note 2) 2.3 V ≤ VCC ≤ 2.7 V 0.7 V
IL
g( )
2.7 V ≤ VCC ≤ 3.6 V 0.8
VOH HIGH Level Output Voltage 2.3 V ≤ VCC ≤ 3.6 V; IOL = 100 A VCC − 0.2 V
OH
g
VCC = 2.3 V; IOH = −8 mA 1.8
VCC = 2.7 V; IOH = −12 mA 2.2
VCC = 3.0 V; IOH = −18 mA 2.4
VCC = 3.0 V; IOH = −24 mA 2.2
VOL LOW Level Output Voltage 2.3 V ≤ VCC ≤ 3.6 V; IOL = 100 A 0.2 V
OL
g
VCC = 2.3 V; IOL= 8 mA 0.6
VCC = 2.7 V; IOL= 12 mA 0.4
VCC = 3.0 V; IOL = 16 mA 0.4
VCC = 3.0 V; IOL = 24 mA 0.55
IIInput Leakage Current 2.3 V ≤ VCC ≤ 3.6 V; 0 V ≤ VI ≤ 5.5 V ±5A
ICC Quiescent Supply Current 2.3 ≤ VCC ≤ 3.6 V ; VI = GND or VCC 10 A
CC
y
2.3 ≤ VCC ≤ 3.6 V; 3.6 ≤ VI or VO ≤ 5.5 V ±10
ICC Increase in ICC per Input 2.3 ≤ VCC ≤ 3.6 V; VIH = VCC − 0.6 V 500 A
2. These values of VI are used to test DC electrical characteristics only.
MC74LCX125
http://onsemi.com
4
AC CHARACTERISTICS tR = tF = 2.5 ns; RL = 500
Limits
TA = −40°C to +85°C
VCC = 3.3 V ± 0.3 V VCC = 2.7 V VCC = 2.5 V ± 0.2 V
CL = 50 pF CL = 50 pF CL = 30 pF
Symbol Parameter Waveform Min Max Min Max Min Max Unit
tPLH
tPHL Propagation Delay Time
Input to Output 1 1.5
1.5 6.0
6.0 1.5
1.5 6.5
6.5 1.5
1.5 7.2
7.2 ns
tPZH
tPZL Output Enable Time to
High and Low Level 2 1.5
1.5 7.0
7.0 1.5
1.5 8.0
8.0 1.5
1.5 9.1
9.1 ns
tPHZ
tPLZ Output Disable Time From
High and Low Level 2 1.5
1.5 6.0
6.0 1.5
1.5 7.0
7.0 1.5
1.5 7.2
7.2 ns
tOSHL
tOSLH Output−to−Output Skew
(Note 3) 1.0
1.0 ns
3. Skew is defined as the absolute value of the dif ference between the actual propagation delay for any two separate outputs of the same device.
The specification applies to any outputs switching in the same direction, either HIGH−to−LOW (tOSHL) or LOW−to−HIGH (tOSLH); parameter
guaranteed by design.
DYNAMIC SWITCHING CHARACTERISTICS
TA = +25°C
Symbol Characteristic Condition Min Typ Max Unit
VOLP Dynamic LOW Peak Voltage
(Note 4) VCC = 3.3 V, CL = 50 pF, VIH = 3.3 V, VIL = 0 V
VCC = 2.5 V, CL = 30 pF, VIH = 2.5 V, VIL = 0 V 0.8
0.6 V
V
VOLV Dynamic LOW Valley Voltage
(Note 4) VCC = 3.3 V, CL = 50 pF, VIH = 3.3 V, VIL = 0 V
VCC = 2.5 V, CL = 30 pF, VIH = 2.5 V, VIL = 0 V −0.8
−0.6 V
V
4. Number of outputs defined as “n”. Measured with “n−1” outputs switching from HIGH−to−LOW or LOW−to−HIGH. The remaining output is
measured in the LOW state.
CAPACITIVE CHARACTERISTICS
Symbol Parameter Condition Typical Unit
CIN Input Capacitance VCC = 3.3 V, VI = 0 V or VCC 7 pF
COUT Output Capacitance VCC = 3.3 V, VI = 0 V or VCC 8 pF
CPD Power Dissipation Capacitance 10 MHz, VCC = 3.3 V, VI = 0 V or VCC 25 pF
ORDERING INFORMATION
Device Package Shipping†
MC74LCX125D SOIC−14 55 Units / Rail
MC74LCX125DG SOIC−14
(Pb−Free) 55 Units / Rail
MC74LCX125DR2 SOIC−14 2500 Tape & Reel
MC74LCX125DR2G SOIC−14
(Pb−Free) 2500 Tape & Reel
MC74LCX125DT TSSOP−14* 96 Units / Rail
MC74LCX125DTG TSSOP−14* 96 Units / Rail
MC74LCX125DTR2 TSSOP−14* 2500 Tape & Reel
MC74LCX125DTR2G TSSOP−14* 2500 Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*This package is inherently Pb−Free.
MC74LCX125
http://onsemi.com
5
WAVEFORM 1 − PROPAGATION DELAYS
tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns
VCC
0 V
VOH
VOL
Dn
On
tPHL
tPLH
WAVEFORM 2 − OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns
VCC
0 V
≈ 0 V
OEn
On
tPZH
≈ 3.0 V
tPHZ
tPZL tPLZ
On
VmiVmi
Vmo Vmo
Figure 3. AC Waveforms
VCC
VOH − 0.3 V
VOL + 0.3 V
GND
Symbol
VCC
3.3 V ± 0.3 V 2.7 V 2.5 V ± 0.2 V
Vmi 1.5 V 1.5 V VCC/2
Vmo 1.5 V 1.5 V VCC/2
VmiVmi
Vmo
Vmo
PULSE
GENERATOR
RT
DUT
VCC
RL
CL
CL= 50 pF at VCC = 3.3 0.3 V or equivalent (includes jig and probe capacitance)
CL= 30 pF at VCC = 2.5 0.2 V or equivalent (includes jig and probe capacitance)
RL= R1 = 500 or equivalent
RT= ZOUT of pulse generator (typically 50 )
Figure 4. Test Circuit
MC74LCX125
http://onsemi.com
6
PACKAGE DIMENSIONS
SOIC−14
D SUFFIX
CASE 751A−03
ISSUE G
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE
DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.127
(0.005) TOTAL IN EXCESS OF THE D
DIMENSION AT MAXIMUM MATERIAL
CONDITION.
−A−
−B−
G
P7 PL
14 8
7
1
M
0.25 (0.010) B M
S
B
M
0.25 (0.010) A S
T
−T−
F
RX 45
SEATING
PLANE D14 PL K
C
J
M
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A8.55 8.75 0.337 0.344
B3.80 4.00 0.150 0.157
C1.35 1.75 0.054 0.068
D0.35 0.49 0.014 0.019
F0.40 1.25 0.016 0.049
G1.27 BSC 0.050 BSC
J0.19 0.25 0.008 0.009
K0.10 0.25 0.004 0.009
M0 7 0 7
P5.80 6.20 0.228 0.244
R0.25 0.50 0.010 0.019
MC74LCX125
http://onsemi.com
7
PACKAGE DIMENSIONS
TSSOP−14
DT SUFFIX
CASE 948G−01
ISSUE A
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A4.90 5.10 0.193 0.200
B4.30 4.50 0.169 0.177
C−−− 1.20 −−− 0.047
D0.05 0.15 0.002 0.006
F0.50 0.75 0.020 0.030
G0.65 BSC 0.026 BSC
H0.50 0.60 0.020 0.024
J0.09 0.20 0.004 0.008
J1 0.09 0.16 0.004 0.006
K0.19 0.30 0.007 0.012
K1 0.19 0.25 0.007 0.010
L6.40 BSC 0.252 BSC
M0 8 0 8
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A DOES NOT INCLUDE MOLD
FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH OR GATE BURRS SHALL NOT
EXCEED 0.15 (0.006) PER SIDE.
4. DIMENSION B DOES NOT INCLUDE
INTERLEAD FLASH OR PROTRUSION.
INTERLEAD FLASH OR PROTRUSION SHALL
NOT EXCEED 0.25 (0.010) PER SIDE.
5. DIMENSION K DOES NOT INCLUDE
DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08
(0.003) TOTAL IN EXCESS OF THE K
DIMENSION AT MAXIMUM MATERIAL
CONDITION.
6. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
7. DIMENSION A AND B ARE TO BE
DETERMINED AT DATUM PLANE −W−.
S
U0.15 (0.006) T
2X L/2
S
U
M
0.10 (0.004) V S
T
L−U−
SEATING
PLANE
0.10 (0.004)
−T−
ÇÇÇ
ÇÇÇ
ÇÇÇ
SECTION N−N
DETAIL E
JJ1
K
K1
ÉÉÉ
ÉÉÉ
DETAIL E
F
M
−W−
0.25 (0.010)
8
14
7
1
PIN 1
IDENT.
H
G
A
D
C
B
S
U0.15 (0.006) T
−V−
14X REFK
N
N
MC74LCX125
http://onsemi.com
8
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty , representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Japan: ON Semiconductor, Japan Customer Focus Center
2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051
Phone: 81−3−5773−3850
MC74LCX125/D
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 61312, Phoenix, Arizona 85082−1312 USA
Phone: 480−829−7710 or 800−344−3860 Toll Free USA/Canada
Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
ON Semiconductor Website: http://onsemi.com
Order Literature: http://www.onsemi.com/litorder
For additional information, please contact your
local Sales Representative.
