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M74HC298 の電気的特性と機能

M74HC298のメーカーはST Microelectronicsです、この部品の機能は「QUAD 2 CHANNEL MULTIPLEXER/REGISTER」です。


製品の詳細 ( Datasheet PDF )

部品番号 M74HC298
部品説明 QUAD 2 CHANNEL MULTIPLEXER/REGISTER
メーカ ST Microelectronics
ロゴ ST Microelectronics ロゴ 




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M74HC298 Datasheet, M74HC298 PDF,ピン配置, 機能
M54HC298
M74HC298
QUAD 2 CHANNEL MULTIPLEXER/REGISTER
. HIGH SPEED
fMAX = 73 MHz (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 54/74LS298
DESCRIPTION
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M 54HC 29 8F 1R
M 74H C2 98 M1 R
M 74HC 29 8B 1R
M 74H C2 98 C1 R
The M54/74HC298 is a high speed CMOS QUAD 2-
CHANNEL MULTIPLEXER/REGISTER fabricated
in silicon gate C2MOS technology.
PIN CONNECTIONS (top view)
It has the same high speed performance of LSTTL
combined with true CMOS low power consumption.
These circuits are controlled by the signals WORD
SELECT and CLOCK. When the WORD SELECT
input is taken low Word 1 (A1, B1, C1 and D1) is
presented to the input of the flip-flops, and when
WORD SELECT is high Word 2 (A2, B2, C2 and D2)
is presented to the inputs of the flip-flops. The select
word is clocked to the output terminals on the nega-
tive edge of the clock pulse. All inputs are equipped
with protection circuits against static discharge and
transient excess voltage.
INPUT AND OUTPUT EQUIVALENT CIRCUIT
October 1992
NC =
No Internal
Connection
1/11

1 Page





M74HC298 pdf, ピン配列
PIN DESCRIPTION
PIN No
1, 2, 5, 6
3, 4, 7, 9
12 to 15
10
11
8
16
SYMBOL
A2, B2,
C2, D2
A1, B1,
C1, D1
QA to QD
WORD
SELECT
CLOCK
GND
VCC
NAME AND FUNCTION
Word 2 Data Inputs
Word 1 Data Inputs
Outputs
Word Select Input
Clock Input (HIGH to
LOW, Edge-triggered)
Ground (0V)
Positive Supply Voltage
IEC LOGIC SYMBOL
M54/M74HC298
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC Supply Voltage
-0.5 to +7
V
VI DC Input Voltage
-0.5 to VCC + 0.5
V
VO DC Output Voltage
-0.5 to VCC + 0.5
V
IIK DC Input Diode Current
± 20 mA
IOK DC Output Diode Current
± 20 mA
IO DC Output Source Sink Current Per Output Pin
± 25 mA
ICC or IGND DC VCC or Ground Current
± 50 mA
PD Power Dissipation
Tstg Storage Temperature
500 (*)
-65 to +150
mW
oC
TL Lead Temperature (10 sec)
300 oC
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition isnotimplied.
(*) 500 mW: 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC
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
3/11


3Pages


M74HC298 電子部品, 半導体
M54/M74HC298
SWITCHING CHARACTERISTICS TEST WAVEFORM
TEST CIRCUIT
TRANSITION TIME AND VIH, VIL OF INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERISTICS TEST.
6/11

6 Page



ページ 合計 : 11 ページ
 
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共有リンク

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