FAIRCHILD 74LCX27SJX

Revised February 2001
74LCX27
Low Voltage Triple 3-Input NOR Gate
with 5V Tolerant Inputs
General Description
Features
The LCX27 contains three 3-input NOR gates. The inputs
tolerate voltages up to 7V allowing the interface of 5V systems to 3V systems.
■ 5V tolerant inputs
The 74LCX27 is fabricated with advanced CMOS technology to achieve high speed operation while maintaining
CMOS low power dissipation.
■ 2.3V–3.6V VCC specifications provided
■ 4.9 ns tPD max (VCC = 3.3V), 10 µA ICC max
■ Power down high impedance inputs and outputs
■ ±24 mA output drive (VCC = 3.0V)
■ Implements patented noise/EMI reduction circuitry
■ Latch-up performance exceeds 500 mA
■ ESD performance:
Human body model > 2000V
Machine model > 200V
Ordering Code:
Order Number
Package Number
74LCX27M
74LCX27SJ
74LCX27MTC
Package Description
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
M14D
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MTC14
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
IEEE/IEC
Pin Descriptions
Truth Table
Pin Names
Description
A n , B n , Cn
Inputs
On
Outputs
On = An + Bn + Cn
Inputs
Bn
Cn
On
H
X
X
L
X
H
X
L
X
X
H
L
L
L
L
H = HIGH Voltage Level
© 2001 Fairchild Semiconductor Corporation
DS500454
Output
An
H
L = LOW Voltage Level
X = Immaterial
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74LCX27 Low Voltage Triple 3-Input NOR Gate with 5V Tolerant Inputs
February 2001
74LCX27
Absolute Maximum Ratings(Note 1)
Symbol
Parameter
Value
Conditions
VCC
Supply Voltage
−0.5 to +7.0
VI
DC Input Voltage
−0.5 to +7.0
VO
DC Output Voltage
IIK
DC Input Diode Current
−50
VI < GND
IOK
DC Output Diode Current
−50
VO < GND
+50
VO > VCC
Units
V
V
−0.5 to VCC + 0.5
Output in HIGH or LOW State (Note 2)
V
mA
mA
IO
DC 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
−65 to +150
°C
Recommended Operating Conditions (Note 3)
Symbol
VCC
Parameter
Min
Max
Operating
2.0
3.6
Data Retention
1.5
3.6
Supply Voltage
VI
Input Voltage
VO
Output Voltage
HIGH or LOW State
IOH/IOL
Output Current
VCC = 3.0V − 3.6V
±24
VCC = 2.7V - 3.0V
±12
VCC = 2.3V - 2.7V
±8
TA
Free-Air Operating Temperature
∆t/∆V
Input Edge Rate, VIN = 0.8V–2.0V, VCC = 3.0V
Units
V
0
5.5
V
0
VCC
V
mA
−40
85
°C
0
10
ns/V
Note 1: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated
at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the Absolute Maximum Ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation.
Note 2: IO Absolute Maximum Rating must be observed.
Note 3: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol
VIH
VIL
VOH
VOL
Parameter
Conditions
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Voltage
LOW Level Output Voltage
IOH = −100 µA
VCC
TA = −40°C to +85°C
(V)
Min
2.3 − 2.7
1.7
2.7 − 3.6
2.0
Units
Max
V
2.3 − 2.7
0.7
2.7 − 3.6
0.8
2.3 − 3.6
VCC − 0.2
IOH = −8 mA
2.3
1.8
IOH = −12 mA
2.7
2.2
IOH = −18 mA
3.0
2.4
IOH = −24 mA
3.0
2.2
IOL = 100 µA
2.3 − 3.6
0.2
IOL = 8mA
2.3
0.6
IOL = 12 mA
2.7
0.4
IOL = 16 mA
3.0
0.4
V
V
V
IOL = 24 mA
3.0
0.55
II
Input Leakage Current
0 ≤ VI ≤ 5.5V
2.3 − 3.6
±5.0
µA
IOFF
Power-Off Leakage Current
VI or VO = 5.5V
0
10
µA
ICC
Quiescent Supply Current
VI = VCC or GND
2.3 − 3.6
10
3.6V ≤ VI ≤ 5.5V
2.3 − 3.6
±10
VIH = VCC −0.6V
2.3 − 3.6
500
∆ICC
Increase in ICC per Input
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2
µA
µA
TA = −40°C to +85°CF, RL = 500Ω
Symbol
tPHL
Parameter
Propagation Delay
tPLH
tOSHL
VCC = 3.3V ± 0.3V
VCC = 2.7V
VCC = 2.5V ± 0.2V
CL = 50pF
CL = 50pF
CL = 30pF
Min
Max
Min
Max
Min
1.5
4.9
1.5
5.8
1.5
5.9
1.5
4.9
1.5
5.8
1.5
5.9
Output to Output Skew (Note 4)
Max
1.0
tOSLH
Units
ns
ns
1.0
Note 4: Skew is defined as the absolute value of the difference 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).
Dynamic Switching Characteristics
Symbol
VOLP
VOLV
Parameter
Quiet Output Dynamic Peak VOL
Quiet Output Dynamic Valley VOL
Conditions
VCC
TA = 25°C
(V)
Typical
CL = 50 pF, VIH = 3.3V, VIL = 0V
3.3
0.8
CL = 30 pF, VIH = 2.5V, VIL = 0V
2.5
0.6
CL = 50 pF, VIH = 3.3V, VIL = 0V
3.3
−0.8
CL = 30 pF, VIH = 2.5V, VIL = 0V
2.5
−0.6
Unit
V
V
Capacitance
Typical
Units
CIN
Symbol
Input Capacitance
Parameter
VCC = Open, VI = 0V or VCC
Conditions
7
pF
COUT
Output Capacitance
VCC = 3.3V, VI = 0V or VCC
8
pF
CPD
Power Dissipation Capacitance
VCC = 3.3V, VI = 0V or VCC, f = 10 MHz
25
pF
3
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74LCX27
AC Electrical Characteristics
74LCX27
AC LOADING and WAVEFORMS Generic for LCX Family
FIGURE 1. AC Test Circuit (CL includes probe and jig capacitance)
Test
Switch
tPLH, tPHL
Open
tPZL, tPLZ
6V at VCC = 3.3 ± 0.3V
VCC x 2 at VCC = 2.5 ± 0.2V
tPZH,tPHZ
GND
Waveform for Inverting and Non-Inverting Functions
3-STATE Output High Enable and
Disable Times for Logic
Propagation Delay. Pulse Width and trec Waveforms
Setup Time, Hold Time and Recovery Time for Logic
trise and tfall
3-STATE Output Low Enable and
Disable Times for Logic
FIGURE 2. Waveforms
(Input Characteristics; f =1MHz, tr = tf = 3ns)
Symbol
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VCC
3.3V ± 0.3V
2.7V
2.5V ± 0.2V
Vmi
1.5V
1.5V
VCC/2
Vmo
1.5V
1.5V
VCC/2
Vx
VOL + 0.3V
VOL + 0.3V
VOL + 0.15V
Vy
VOH − 0.3V
VOH − 0.3V
VOH − 0.15V
4
74LCX27
Schematic Diagram Generic for LCX Family
5
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74LCX27
Physical Dimensions inches (millimeters) unless otherwise noted
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
Package Number M14A
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6
74LCX27
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M14D
7
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74LCX27 Low Voltage Triple 3-Input NOR Gate with 5V Tolerant Inputs
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC14
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
2. A critical component in any component of a life support
device or system whose failure to perform can be reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the
user.
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