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MC74AC257 の電気的特性と機能

MC74AC257のメーカーはON Semiconductorです、この部品の機能は「QUAD 2-INPUT MULTIPLEXER」です。


製品の詳細 ( Datasheet PDF )

部品番号 MC74AC257
部品説明 QUAD 2-INPUT MULTIPLEXER
メーカ ON Semiconductor
ロゴ ON Semiconductor ロゴ 




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MC74AC257 Datasheet, MC74AC257 PDF,ピン配置, 機能
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)
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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

1 Page





MC74AC257 pdf, ピン配列
MC74AC257, MC74ACT257
MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC
VI
VO
IIK
IOK
IO
ICC
IGND
TSTG
TL
TJ
qJA
DC Supply Voltage
DC Input Voltage
DC Output Voltage (Note 1)
DC Input Diode Current
DC Output Diode Current
DC Output Sink/Source Current
DC Supply Current per Output Pin
DC Ground Current per Output Pin
Storage Temperature Range
Lead temperature, 1 mm from Case for 10 Seconds
Junction temperature under Bias
Thermal Resistance (Note 2)
SOIC
TSSOP
−0.5 to +7.0
*0.5 VCC +0.5
*0.5 VCC +0.5
±20
±50
±50
±50
±50
−65 to +150
260
+150
69.1
103.8
V
V
V
mA
mA
mA
mA
mA
°C
°C
°C
°C/W
PD Power Dissipation in Still Air at 65°C (Note 3)
SOIC
TSSOP
500
500
mW
MSL
Moisture Sensitivity
Level 1
FR
VESD
Flammability Rating
ESD Withstand Voltage
Oxygen Index: 30% − 35%
Human Body Model (Note 4)
Machine Model (Note 5)
Charged Device Model (Note 6)
UL 94 V−0 @ 0.125 in
> 2000
> 200
> 1000
V
ILatch−Up Latch−Up Performance Above VCC and Below GND at 85°C (Note 7)
±100
mA
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. IO absolute maximum rating must be observed.
2. The package thermal impedance is calculated in accordance with JESD51−7.
3. 500 mW at 65°C; derate to 300 mW by 10 mW/ from 65°C to 85°C.
4. Tested to EIA/JESD22−A114−A.
5. Tested to EIA/JESD22−A115−A.
6. Tested to JESD22−C101−A.
7. Tested to EIA/JESD78.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min Typ Max Unit
VCC Supply Voltage
AC
ACT
2.0 5.0 6.0
4.5 5.0 5.5
V
VIN, VOUT DC Input Voltage, Output Voltage (Ref. to GND)
0 − VCC V
tr, tf
Input Rise and Fall Time (Note 1)
AC Devices except Schmitt Inputs
VCC @ 3.0 V
150
VCC @ 4.5 V
40
− ns/V
VCC @ 5.5 V
25
tr, tf
Input Rise and Fall Time (Note 2)
ACT Devices except Schmitt Inputs
VCC @ 4.5 V
10
ns/V
VCC @ 5.5 V
8.0
TA Operating Ambient Temperature Range
−40 25 85 °C
IOH Output Current − High
− − −24 mA
IOL Output Current − Low
− − 24 mA
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
1. 1. Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.
2. 2. Vin from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
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3Pages


MC74AC257 電子部品, 半導体
MC74AC257, MC74ACT257
DC CHARACTERISTICS
Symbol
Parameter
VIH Minimum High Level
Input Voltage
VIL Maximum Low Level
Input Voltage
VOH Minimum High Level
Output Voltage
74ACT
74ACT
VCC
(V)
TA = +25°C
TA =
−40°C to
+85°C
Typ Guaranteed Limits
4.5 1.5 2.0
5.5 1.5 2.0
2.0
2.0
4.5 1.5 0.8
5.5 1.5 0.8
0.8
0.8
4.5 4.49 4.4
5.5 5.49 5.4
4.4
5.4
VOL Maximum Low Level
Output Voltage
4.5 − 3.86
5.5 − 4.86
4.5 0.001 0.1
5.5 0.001 0.1
3.76
4.76
0.1
0.1
IIN Maximum Input
Leakage Current
4.5 −
5.5 −
5.5 −
DICCT
IOZ
Additional Max. ICC/Input
Maximum
3−State
Current
5.5 0.6
5.5 −
IOLD
IOHD
ICC
†Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
5.5 −
5.5 −
5.5 −
*All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
0.36
0.36
±0.1
±0.5
8.0
0.44
0.44
±1.0
1.5
±5.0
75
−75
80
Unit Conditions
V
VOUT = 0.1 V
or VCC − 0.1 V
V
VOUT = 0.1 V
or VCC − 0.1 V
V IOUT = −50 mA
*VIN = VIL or VIH
V −24 mA
IOH −24 mA
V IOUT = 50 mA
*VIN = VIL or VIH
V
IOL
24 mA
24 mA
mA VI = VCC, GND
mA VI = VCC − 2.1 V
VI (OE) = VIL, VIH
mA VI = VCC, GND
VO = VCC, GND
mA VOLD = 1.65 V Max
mA VOHD = 3.85 V Min
mA VIN = VCC or GND
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共有リンク

Link :


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