ETC 74LCX14SJX

Revised January 2001
74LCX14
Low Voltage Hex Inverter
with 5V Tolerant Schmitt Trigger Inputs
General Description
Features
The LCX14 contains six inverter gates each with a Schmitt
trigger input. They are capable of transforming slowly
changing input signals into sharply defined, jitter-free output signals. In addition, they have a greater noise margin
than conventional inverters.
■ 5V tolerant inputs
The LCX14 has hysteresis between the positive-going and
negative-going input thresholds (typically 1.0V) which is
determined internally by transistor ratios and is essentially
insensitive to temperature and supply voltage variations.
■ ±24 mA output drive (VCC = 3.0V)
The inputs tolerate voltages up to 7V allowing the interface
of 5V, 3V and 2.5V systems.
The 74LCX14 is fabricated with advanced CMOS technology to achieve high speed operation while maintaining
CMOS low power dissipation.
■ 2.3V–3.6V VCC specifications provided
■ 6.5 ns tPD max (VCC = 3.3V), 10 µA ICC max
■ Power down high impedance inputs and outputs
■ Implements patented noise/EMI reduction circuitry
■ Latch-up performance exceeds 500 mA
■ ESD performance:
Machine model > 2000V
Human model > 200V
Ordering Code:
Order Number
Package Number
74LCX14M
M14A
74LCX14SJ
M14D
74LCX14MTC
MTC14
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
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.
Connection Diagram
Logic Symbol
IEEE/IEC
Truth Table
Pin Descriptions
Input
Output
Pin Names
Description
A
O
In
Inputs
L
H
On
Outputs
H
L
© 2001 Fairchild Semiconductor Corporation
DS012412
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74LCX14 Low Voltage Hex Inverter with 5V Tolerant Schmitt Trigger Inputs
March 1995
74LCX14
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
Supply Voltage
Min
Max
Operating
2.0
3.6
Data Retention
1.5
3.6
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
Units
V
0
5.5
V
0
VCC
V
mA
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
Vt+
Vt−
VH
VOH
Parameter
Conditions
Positive Input Threshold
Negative Input Threshold
Hysteresis
HIGH Level Output Voltage
IOH = −100µA
LOW Level Output Voltage
(V)
TA = −40°C to +85°C
Min
Max
2.5
0.9
1.7
3.0
1.2
2.2
2.5
0.4
1.1
3.0
0.6
1.5
2.5
0.3
1.0
3.0
0.4
1.2
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
3.0
2.2
IOH = −24 mA
VOL
VCC
IOL = 100µA
2.3 − 3.6
Units
V
V
V
V
0.2
IOL = 8mA
2.3
0.6
IOL = 12 mA
2.7
0.4
IOL = 16 mA
3.0
0.4
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°C, RL = 500 Ω
Symbol
tPHL
Parameter
Propagation Delay Time
tPLH
VCC = 3.3V ± 0.3V
VCC = 2.7V
VCC = 2.5V ± 0.2V
CL= 50 pF
CL = 50 pF
CL = 30 pF
Min
Max
Min
Max
Min
1.5
6.5
1.5
7.5
1.5
7.8
1.5
6.5
1.5
7.5
1.5
7.8
tOSHL
Output to Output Skew
1.0
tOSLH
(Note 4)
1.0
Units
Max
ns
ns
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
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
Parameter
Quiet Output Dynamic Peak VOL
Quiet Output Dynamic Valley VOL
Conditions
Units
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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74LCX14
AC Electrical Characteristics
74LCX14
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 Low Enable and
Disable Times for Logic
Propagation Delay, Pulse Width and trec Waveforms
Setup Time, Hold TIme and Recovery TIme for Logic
3-STATE Output High Enable and
Disable TImes for Logic
trise and tfall
FIGURE 2. Waveforms
(Input Pulse Characteristics; f = 1MHz, tr = tf = 3ns)
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
Symbol
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74LCX14
Schematic Diagram Generic for LCX Family
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74LCX14
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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74LCX14
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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74LCX14 Low Voltage Hex Inverter with 5V Tolerant Schmitt Trigger 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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