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74LCX138MTC 데이터시트 PDF




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부품번호 74LCX138MTC 기능
기능 Low Voltage 1-of-8 Decoder/Demultiplexer with 5V Tolerant Inputs
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74LCX138MTC 데이터시트, 핀배열, 회로
March 1995
Revised March 1999
74LCX138
Low Voltage 1-of-8 Decoder/Demultiplexer
with 5V Tolerant Inputs
General Description
The LCX138 is a high-speed 1-of-8 decoder/demultiplexer.
This device is ideally suited for high-speed memory chip
select address decoding. The multiple input enables allow
parallel expansion to a 1-of-24 decoder using just three
LCX138 devices or a 1-of-32 decoder using four LCX138
devices and one inverter.
The 74LCX138 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 6.0 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 > 200V
Ordering Code:
Order Number Package Number
Package Description
74LCX138M
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow
74LCX138SJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LCX138MTC
MTC16
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Connection Diagram
Pin Descriptions
Pin Names
A0–A2
E1–E2
E3
O0–O7
Description
Address Inputs
Enable Inputs
Enable Input
Outputs
© 1999 Fairchild Semiconductor Corporation DS012417.prf
www.fairchildsemi.com




74LCX138MTC pdf, 반도체, 판매, 대치품
AC Electrical Characteristics
TA = −40°C to +85°C, RL = 500
Symbol
Parameter
VCC = 3.3V ± 0.3V
CL = 50pF
VCC = 2.7V
CL = 50pF
VCC = 2.5V ±0.2V
CL = 30pF
Units
Min Max Min Max Min Max
tPHLtPLH
Propagation Delay
An to Qn
1.5 6.0 1.5 7.0 1.5 7.2
1.5 6.0 1.5 7.0 1.5 7.2
ns
tPHL Propagation Delay
tPLH E3 to Qn
1.5 6.5 1.5 7.5 1.5 8.4
1.5 6.5 1.5 7.5 1.5 8.4
ns
tPHL Propagation Delay
tPLH E1 or E2 to Qn
1.5 6.0 1.5 7.0 1.5 7.2
1.5 6.0 1.5 7.0 1.5 7.2
ns
tOSHL
tOSLH
Output to Output Skew (Note 4)
1.0
1.0
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
Parameter
VOLP
Quiet Output Dynamic Peak VOL
VOLV
Quiet Output Dynamic Valley VOL
Capacitance
Conditions
CL = 50 pF, VIH = 3.3V, VIL = 0V
CL = 30 pF, VIH = 2.5V, VIL = 0V
CL = 50 pF, VIH = 3.3V, VIL = 0V
CL = 30 pF, VIH = 2.5V, VIL = 0V
VCC
TA = 25°C
Units
(V) Typical
3.3 0.8
2.5 0.6
V
3.3 0.8
2.5 0.6
V
Symbol
CIN
COUT
CPD
Parameter
Input Capacitance
Output Capacitance
Power Dissipation Capacitance
Conditions
VCC = Open, VI = 0V or VCC
VCC = 3.3V, VI = 0V or VCC
VCC = 3.3V, VI = 0V or VCC, f = 10 MHz
Typical
7
8
25
Units
pF
pF
pF
www.fairchildsemi.com
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74LCX138MTC 전자부품, 판매, 대치품
Physical Dimensions inches (millimeters) unless otherwise noted
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow
Package Number M16A
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M16D
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74LCX138MTC

Low Voltage 1-of-8 Decoder/Demultiplexer with 5V Tolerant Inputs

Fairchild Semiconductor
Fairchild Semiconductor

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