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부품번호 | 74HCT138 기능 |
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기능 | 3 TO 8 LINE DECODER DEMULTIPLEXER | ||
제조업체 | Diodes | ||
로고 | |||
전체 10 페이지수
74HCT138
3 TO 8 LINE DECODER DEMULTIPLEXER
Description
The 74HCT138 is a high speed CMOS device that is designed to be
pin compatable with 74LS low power Schottky types.
Pin Assignments
The device accepts a three bit binary weighted address on input pins
A0, A1 and A2 and when enabled will produce one active low output
with the remaing seven being high.
There are two active LOW enable inputs E1 and E2, and one active
HIGH enable input E3. The disabled device state results in all outputs
being high. The enable state occurs with E1 and E2 asserted low and
E3 asserted high.
The multiple enable lines allow for the parallel expansion of decoders
to create 4-to-16 line versions with no additional parts and 5-to-32
versions with the addition of a single inverter.
Features
• Wide Supply Voltage Range from 4.5V to 5.5V
• Sinks or sources 8mA at VCC = 4.5V
• CMOS low power consumption
• Schmitt Trigger Action at All Inputs
• Inputs accept up to 6.0V
• ESD Protection Tested per JESD 22
Exceeds 200-V Machine Model (A115-A)
Exceeds 2000-V Human Body Model (A114-A)
Exceeds 1000-V Charged Device Model (C101C)
• Latch-Up Exceeds 250mA per JESD 78, Class II
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
• Memory chip select decoding
• Demultiplexing
• Single line peripheral control
• Allow simple serial bit streams from a microcontroller to control as
many peripheral lines as needed.
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Click here for ordering information, located at the end of datasheet
74HCT138
Document number: DS35489 Rev. 3 - 2
1 of 10
www.diodes.com
June 2013
© Diodes Incorporated
74HCT138
Absolute Maximum Ratings (Note 4) (@TA = +25°C, unless otherwise specified.)
Symbol
ESD HBM
ESD CDM
ESD MM
VCC
VI
Vo
IIK
IIK
IOK
IOK
IO
ICC
IGND
TJ
TSTG
PTOT
Description
Human Body Model ESD Protection
Charged Device Model ESD Protection
Machine Model ESD Protection
Supply Voltage Range
Input Voltage Range
Voltage Applied to Output in High or Low State
Input Clamp Current VI < -0.5V
Input Clamp Current VI > VCC + 0.5V
Output Clamp Current VO < -0.5V
Output Clamp Current VO > VCC + 0.5V
Continuous Output Current
Continuous Current Through VCC
Continuous Current Through GND
Operating Junction Temperature
Storage Temperature
Total Power Dissipation
Rating
2
1
200
-0.5 to 7.0
-0.5 to 7.0
-0.3 to VCC
-20
20
-20
20
+/- 25
50
-50
-40 to 150
-65 to 150
500
Unit
KV
KV
V
V
V
V
mA
mA
mA
mA
mA
mA
mA
°C
°C
mW
Note:
4. Stresses beyond the absolute maximum may result in immediate failure or reduced reliability. These are stress values and device operation should
be within recommend values.
Recommended Operating Conditions (Note 5) (@TA = +25°C, unless otherwise specified.)
Symbol
VCC
VI
VO
t/V
TA
Parameter
Conditions
Supply Voltage
Input Voltage
Output Voltage
Input transition rise or fall rate
Operating free-air temperature
Note:
5. Unused inputs should be held at VCC or Ground.
Active Mode
VCC = 4.5V
Min Max Unit
4.5 5.5 V
0 Vcc V
0 VCC V
100 ns/V
-40 125 °C
74HCT138
Document number: DS35489 Rev. 3 - 2
4 of 10
www.diodes.com
June 2013
© Diodes Incorporated
4페이지 Ordering Information
74HCT138
Device
Package Code
Packaging
(Note 6)
7” Tape and Reel(Note 7)
Quantity
Part Number Suffix
74HCT138S16-13
S16
SO-16
2500/Tape & Reel
-13
74HCT138T16-13
T16
TSSOP-16
2500/Tape & Reel
-13
Notes:
6. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
http://www.diodes.com/datasheets/ap02001.pdf.
7. The taping orientation is located on our website at http://www.diodes.com/datasheets/ap02007.pdf
Marking Information
(1) SO-16, TSSOP-16
Part Number
74HCT138S16
74HCT138T16
Package
SO-16
TSSOP-16
74HCT138
Document number: DS35489 Rev. 3 - 2
7 of 10
www.diodes.com
June 2013
© Diodes Incorporated
7페이지 | |||
구 성 | 총 10 페이지수 | ||
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |