SL74HC251N 반도체 회로 부품 판매점
8-Input Data Selector/Multiplexer with 3-State Outputs
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 System Logic Semiconductor |
SL74HC251
8-Input Data Selector/Multiplexer with 3-State Outputs
High-Performance Silicon-Gate CMOS
The SL74HC251 is identical in pinout to the LS/ALS251. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
The device selects one of the eight binary Data Inputs, as
determined by the Address Inputs. The Output Enable pin must be at a
low level for the selected data to appear at the outputs. If Output
Enable is high, the Y and the Y outputs are in the high-impedance state.
This 3-State feature allows the IN74HC251 to be used in bus-oriented
systems.
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
SL74HC251N Plastic
SL74HC251D SOIC
TA = -55° to 125° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
PIN 16 =VCC
PIN 8 = GND
SLS
System Logic
Semiconductor
FUNCTION TABLE
Inputs
Outputs
A2 A1 A0 OE Y Y
XX X H Z Z
LL L
L D0 D0
LL H
L D1 D1
LH L
L D2 D2
LH H
L D3 D3
HL L
L D4 D4
HL H
L D5 D5
HH L
L D6 D6
HH H
L D7 D7
D0,D1...D7=the level of the respective D
input
Z = high-impedance state
X = don’t care
SL74HC251
MAXIMUM RATINGS*
Symbol
VCC
VIN
VOUT
IIN
IOUT
ICC
PD
Parameter
DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)
DC Output Voltage (Referenced to GND)
DC Input Current, per Pin
DC Output Current, per Pin
DC Supply Current, VCC and GND Pins
Power Dissipation in Still Air, Plastic DIP+
SOIC Package+
Value
-0.5 to +7.0
-1.5 to VCC +1.5
-0.5 to VCC +0.5
±25
±50
±75
750
500
Tstg Storage Temperature
TL Lead Temperature, 1 mm from Case for 10 Seconds
(Plastic DIP or SOIC Package)
-65 to +150
260
*Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
+Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C
SOIC Package: : - 7 mW/°C from 65° to 125°C
Unit
V
V
V
mA
mA
mA
mW
°C
°C
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
VCC
VIN, VOUT
TA
tr, tf
DC Supply Voltage (Referenced to GND)
DC Input Voltage, Output Voltage (Referenced to GND)
Operating Temperature, All Package Types
Input Rise and Fall Time (Figure 1)
VCC =2.0 V
VCC =4.5 V
VCC =6.0 V
Min Max Unit
2.0 6.0
V
0 VCC V
-55 +125 °C
0 1000 ns
0 500
0 400
This device contains protection circuitry to guard against damage due to high static voltages or electric
fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated
voltages to this high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range
GND≤(VIN or VOUT)≤VCC.
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC).
Unused outputs must be left open.
SLS
System Logic
Semiconductor
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SL74HC251N multiplexer
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
SL74HC251
8-Input Data Selector/Multiplexer with 3-State Outputs - System Logic Semiconductor
SL74HC251D
8-Input Data Selector/Multiplexer with 3-State Outputs - System Logic Semiconductor
SL74HC251N
8-Input Data Selector/Multiplexer with 3-State Outputs - System Logic Semiconductor