74HC157BQ データシートの表示（PDF） - NXP Semiconductors.
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74HC157BQ Datasheet PDF : 18 Pages
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NXP Semiconductors
74HC157; 74HCT157
Quad 2-input multiplexer
2 1I0
3 1I1
5 2I0
6 2I1
11 3I0
10 3I1
14 4I0
13 4I1
SELECTOR
1Y 4
2Y 7
MULTIPLEXER
OUTPUTS
3Y 9
4Y 12
S
1
Fig 3. Logic symbol
E
15 mna483
5. Pinning information
5.1 Pinning
S1
1I0 2
1I1 3
1Y 4
2I0 5
2I1 6
2Y 7
GND 8
74HC157
74HCT157
16 VCC
15 E
14 4I0
13 4I1
12 4Y
11 3I0
10 3I1
9 3Y
001aan353
Fig 5. Pin configuration DIP16, SO16, (T)SSOP16
1
G1
15 EN
2
1 MUX
4
3
1
5
7
6
11
9
10
14
12
13
mna482
Fig 4. IEC logic symbol
terminal 1
index area
74HC157
74HCT157
1I0 2
1I1 3
1Y 4
2I0 5
2I1 6
2Y 7
GND(1)
15 E
14 4I0
13 4I1
12 4Y
11 3I0
10 3I1
001aan354
Transparent top view
(1) This is not a supply pin. The substrate is attached to
this pad using conductive die attach material. There
is no electrical or mechanical requirement to solder
this pad. However, if it is soldered, the solder land
should remain floating or be connected to GND.
Fig 6. Pin configuration DHVQFN16
74HC_HCT157
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 31 December 2010
© NXP B.V. 2010. All rights reserved.
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