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MC74AC257 데이터시트 PDF




ON Semiconductor에서 제조한 전자 부품 MC74AC257은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 MC74AC257 기능
기능 QUAD 2-INPUT MULTIPLEXER
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MC74AC257 데이터시트, 핀배열, 회로
MC74AC257, MC74ACT257
Quad 2-Input Multiplexer
with 3-State Outputs
The MC74AC257/74ACT257 is a quad 2−input multiplexer with
3−state outputs. Four bits of data from two sources can be selected
using a Common Data Select input. The four outputs present the
selected data in true (noninverted) form. The outputs may be switched
to a high impedance state by placing a logic HIGH on the common
Output Enable (OE) input, allowing the outputs to interface directly
with bus−oriented systems.
Multiplexer Expansion by Tying Outputs Together
Noninverting 3−State Outputs
Outputs Source/Sink 24 mA
ACT257 Has TTL Compatible Inputs
These are Pb−Free Devices
VCC OE I0c I1c Zc I0d I1d Zd
16 15 14 13 12 11 10 9
12345678
S I0a I1a Za I0b I1b Zb GND
Figure 1. Pinout: 16−Lead Packages Conductors
(Top View)
www.onsemi.com
16
1
16
1
MARKING
DIAGRAMS
16
SOIC−16
D SUFFIX
CASE 751B
1
xxx257G
AWLYWW
TSSOP−16
DT SUFFIX
CASE 948F
16
xxx
257
ALYWG
G
1
xxx = AC or ACT
A = Assembly Location
WL or L = Wafer Lot
Y = Year
WW or W = Work Week
G or G = Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
March, 2015 − Rev. 8
1
Publication Order Number:
MC74AC257/D




MC74AC257 pdf, 반도체, 판매, 대치품
MC74AC257, MC74ACT257
DC CHARACTERISTICS
Symbol
Parameter
VIH Minimum High Level
Input Voltage
VIL Maximum Low Level
Input Voltage
VOH Minimum High Level
Output Voltage
74AC
74AC
VCC
(V)
TA = +25°C
TA =
−40°C to
+85°C
Typ Guaranteed Limits
3.0 1.5 2.1
4.5 2.25 3.15
5.5 2.75 3.85
2.1
3.15
3.85
3.0 1.5 0.9
4.5 2.25 1.35
5.5 2.75 1.65
0.9
1.35
1.65
3.0 2.99 2.9
4.5 4.49 4.4
5.5 5.49 5.4
2.9
4.4
5.4
Unit
V
V
V
VOL Maximum Low Level
Output Voltage
3.0 − 2.56
4.5 − 3.86
5.5 − 4.86
3.0 0.002 0.1
4.5 0.001 0.1
5.5 0.001 0.1
2.46
3.76
4.76
0.1
0.1
0.1
V
V
3.0 − 0.36
4.5 − 0.36
5.5 − 0.36
0.44
0.44
0.44
V
IIN Maximum Input
Leakage Current
5.5 − ±0.1
±1.0
mA
IOZ Maximum
3−State
Current
5.5 − ±0.5
±5.0
mA
IOLD
IOHD
ICC
†Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
5.5 − −
5.5 − −
5.5 − 8.0
75
−75
80
mA
mA
mA
*All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
NOTE: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC.
Conditions
VOUT = 0.1 V
or VCC − 0.1 V
VOUT = 0.1 V
or VCC − 0.1 V
IOUT = −50 mA
*VIN = VIL or VIH
−12 mA
IOH −24 mA
−24 mA
IOUT = 50 mA
*VIN = VIL or VIH
12 mA
IOL 24 mA
24 mA
VI = VCC, GND
VI (OE) = VIL, VIH
VI = VCC, GND
VO = VCC, GND
VOLD = 1.65 V Max
VOHD = 3.85 V Min
VIN = VCC or GND
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MC74AC257 전자부품, 판매, 대치품
MC74AC257, MC74ACT257
AC CHARACTERISTICS (For Figures and Waveforms − See Section 3 of the ON Semiconductor FACT Data Book, DL138/D)
74ACT
74ACT
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
Min Typ Max
TA = −40°C
to +85°C
CL = 50 pF
Min Max
Unit
Fig.
No.
tPLH
Propagation Delay
In to Zn
tPHL
Propagation Delay
In to Zn
tPLH
Propagation Delay
S to Zn
tPHL
tPZH
Propagation Delay
S to Zn
Output Enable Time
tPZL Output Enable Time
tPHZ
Output Disable Time
tPLZ Output Disable Time
*Voltage Range 5.0 V is 5.0 V ±0.5 V.
5.0 1.5 5.0 7.0 1.0 7.5
5.0 2.0 6.0 7.5 1.5 8.5
5.0 2.0 7.0 9.5 1.5 10.5
5.0 2.5 7.0 10.5 2.0 11.5
5.0 2.0 6.0 8.0 1.5 9.0
5.0 2.0 6.0 8.0 1.5 9.0
5.0 2.5 6.5 9.0 1.5 10.0
5.0 2.0 6.0 7.5 1.5 8.5
ns
ns
ns
ns
ns
ns
ns
ns
3−6
3−6
3−6
3−6
3−7
3−8
3−7
3−8
CAPACITANCE
Symbol
Parameter
CIN Input Capacitance
CPD Power Dissipation Capacitance
Value
Typ
4.5
50
Unit
pF
pF
Test Conditions
VCC = 5.0 V
VCC = 5.0 V
ORDERING INFORMATION
Device Order Number
Package
Shipping
MC74AC257DG
SOIC−16
(Pb−Free)
48 Units / Rail
MC74AC257DR2G
SOIC−16
(Pb−Free)
2500 / Tape & Reel
MC74AC257DTR2G
TSSOP−16
(Pb−Free)
2500 / Tape & Reel
MC74ACT257DG
SOIC−16
(Pb−Free)
48 Units / Rail
MC74ACT257DR2G
SOIC−16
(Pb−Free)
2500 / Tape & Reel
MC74ACT257DTR2G
TSSOP−16
(Pb−Free)
2500 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
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