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Fairchild Semiconductor |
October 1995
Revised June 1999
74LCX38
Low Voltage Quad 2-Input NAND Gate (Open Drain)
with 5V Tolerant Inputs
General Description
The LCX38 contains four 2-input open drain NAND gates.
The inputs tolerate voltages up to 7V allowing the interface
of 5V systems to 3V systems.
The 74LCX38 is fabricated with advanced CMOS technol-
ogy to achieve high speed operation while maintaining
CMOS low power dissipation.
Features
s 5V tolerant inputs
s 2.3V–3.6V VCC specifications provided
s 6.5 ns tPD max (VCC = 3.3V), 10 µA ICC max
s Power down high impedance inputs and outputs
s ±24 mA output drive (VCC = 3.0V)
s Implements patented noise/EMI reduction circuitry
s Latch-up performance exceeds 500 mA
s ESD performance:
Human body model > 2000V
Machine model > 150V
Ordering Code:
Order Number Package Number
Package Description
74LCX38M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow
74LCX38SJ
M14D
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LCX38MTC
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
Pin Names
An, Bn
On
Description
Inputs
Outputs
© 1999 Fairchild Semiconductor Corporation DS012574
www.fairchildsemi.com
Absolute Maximum Ratings(Note 1)
Symbol
Parameter
VCC Supply Voltage
VI DC Input Voltage
VO DC Output Voltage
IIK DC Input Diode Current
IOK DC Output Diode Current
IO
ICC
IGND
TSTG
DC Output Source/Sink Current
DC Supply Current per Supply Pin
DC Ground Current per Ground Pin
Storage Temperature
Value
−0.5 to +7.0
−0.5 to +7.0
−0.5 to VCC + 0.5
−50
−50
+50
±50
±100
±100
−65 to +150
Conditions
Output in HIGH or LOW State (Note 2)
VI < GND
VO < GND
VO > VCC
Units
V
V
V
mA
mA
mA
mA
mA
°C
Recommended Operating Conditions (Note 3)
Symbol
Parameter
Min
Max
Units
VCC Supply Voltage
Operating
Data Retention
2.0
1.5
3.6
3.6
V
VI Input Voltage
0 5.5 V
VO Output Voltage
HIGH or LOW State 0 VCC V
IOH/IOL Output Current
VCC = 3.0V − 3.6V
±24
VCC = 2.7V − 3.0V
±12 mA
VCC = 2.3V − 2.7V
±8
TA Free-Air Operating Temperature
−40 85
°C
∆t/∆V
Input Edge Rate, VIN = 0.8V–2.0V, VCC = 3.0V
0 10 ns/V
Note 1: The Absolute Maximum Ratings are those beyond which the safety of the device cannot be guaranteed. The device should not be operating 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
Parameter
VIH HIGH Level Input Voltage
VIL LOW Level Input Voltage
VOL LOW Level Output Voltage
II
IOFF
ICC
∆ICC
Input Leakage Current
Power-Off Leakage Current
Quiescent Supply Current
Increase in ICC per Input
Conditions
IOL = 100µA
IOL = 8mA
IOL = 12 mA
IOL = 16 mA
IOL = 24 mA
0 ≤ VI ≤ 5.5V
VI or VO = 5.5V
VI = VCC or GND
3.6V ≤ VI ≤ 5.5V
VIH = VCC −0.6V
VCC
(V)
2.3 − 2.7
2.7 − 3.6
2.3 − 2.7
2.3 − 3.6
2.3 − 3.6
2.3
2.7
3.0
3.0
2.3 − 3.6
0
2.3 − 3.6
2.3 − 3.6
2.3 − 3.6
TA = −40°C to +85°C
Min Max
1.7
2.0
0.7
0.8
0.2
0.6
0.4
0.4
0.55
±5.0
10
10
±10
500
Units
V
V
V
µA
µA
µA
µA
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