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부품번호 | M74HC238 기능 |
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기능 | 3 TO 8 LINE DECODER | ||
제조업체 | ST Microelectronics | ||
로고 | |||
전체 10 페이지수
. HIGH SPEED
tPD = 14 ns (TYP.) AT VCC = 5 V
. LOW POWER DISSIPATION
ICC = 4 µA (MAX.) AT TA = 25 °C
. HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE
|IOH| = IOL = 4 mA (MIN.)
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
. PIN AND FUNCTION COMPATIBLE
WITH 54/74LS238
M54HC238
M74HC238
3 TO 8 LINE DECODER
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M 54HC 23 8F 1R
M 74H C2 38 M1 R
M 74HC 23 8B 1R
M 74H C2 38 C1 R
PIN CONNECTIONS (top view)
DESCRIPTION
The M54/74HC238 is a high speed CMOS 3 to 8 line
decoder fabricated in silicon gate C2MOS technology.
It has the same high speed performance of LSTTL
combined with true CMOS low power consumption. If
the device is enabled, 3 binary select inputs (A, B and
C) determine which one of outputs will go high. Enable
input G1 is held ”Low” or either G2A or G2B is held
”High” decoding function is inhibited and all the 8 out-
puts go low. Three enable inputs are provided to ease
cascade connection and application of this address
decoder in memory systems.
All inputs are equipped with protection circuits against
static discharge and transient excess voltage.
NC =
No Internal
Connection
October 1993
1/10
M54/M74HC238
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
VI
VO
Top
tr, tf
Parameter
Supply Voltage
Input Voltage
Output Voltage
Operating Temperature: M54HC Series
M74HC Series
Input Rise and Fall Time
VCC = 2 V
VCC = 4.5 V
VCC = 6 V
Value
2 to 6
0 to VCC
0 to VCC
-55 to +125
-40 to +85
0 to 1000
0 to 500
0 to 400
Unit
V
V
V
oC
oC
ns
DC SPECIFICATIONS
Symbol
Parameter
VIH High Level Input
Voltage
VIL Low Level Input
Voltage
VOH High Level
Output Voltage
VOL Low Level Output
Voltage
II Input Leakage
Current
ICC Quiescent Supply
Current
Test Conditions
VCC
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
VI =
VIH
IO=-20 µA
6.0 or
4.5 VIL IO=-4.0 mA
6.0 IO=-5.2 mA
2.0
4.5
VI =
VIH
IO= 20 µA
6.0 or
4.5 VIL IO= 4.0 mA
6.0 IO= 5.2 mA
6.0 VI = VCC or GND
TA = 25 oC
54HC and 74HC
Min. Typ. Max.
1.5
3.15
4.2
0.5
1.35
1.8
1.9 2.0
4.4 4.5
5.9 6.0
4.18 4.31
5.68 5.8
0.0 0.1
0.0 0.1
0.0 0.1
0.17 0.26
0.18 0.26
±0.1
Value
-40 to 85 oC
74HC
Min. Max.
1.5
3.15
4.2
0.5
1.35
1.8
1.9
4.4
5.9
4.13
5.63
0.1
0.1
0.1
0.33
0.33
±1
-55 to 125 oC
54HC
Min. Max.
1.5
3.15
4.2
0.5
1.35
1.8
1.9
4.4
5.9
4.10
5.60
0.1
0.1
0.1
0.40
0.40
±1
6.0 VI = VCC or GND
4 40 80
Unit
V
V
V
V
µA
µA
4/10
4페이지 DIM.
A
B
D
E
e3
F
G
H
L
M
N
P
Q
M54/M74HC238
Ceramic DIP16/1 MECHANICAL DATA
MIN.
0.38
2.29
0.4
1.17
0.22
0.51
7.8
mm
TYP.
3.3
17.78
MAX.
20
7
2.79
0.55
1.52
0.31
1.27
10.3
8.05
5.08
MIN.
0.015
0.090
0.016
0.046
0.009
0.020
0.307
inch
TYP.
0.130
0.700
MAX.
0.787
0.276
0.110
0.022
0.060
0.012
0.050
0.406
0.317
0.200
P053D
7/10
7페이지 | |||
구 성 | 총 10 페이지수 | ||
다운로드 | [ M74HC238.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
M74HC237 | 3 TO 8 LINE DECODER LATCH | ST Microelectronics |
M74HC238 | 3 TO 8 LINE DECODER | ST Microelectronics |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |