74HCT273D 데이터 시트보기 (PDF) - Philips Electronics
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74HCT273D Datasheet PDF : 21 Pages
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NXP Semiconductors
74HC273; 74HCT273
Octal D-type flip-flop with reset; positive-edge trigger
5. Pinning information
5.1 Pinning
MR 1
Q0 2
D0 3
D1 4
Q1 5
Q2 6
D2 7
D3 8
Q3 9
GND 10
74HC273
74HCT273
20 VCC
19 Q7
18 D7
17 D6
16 Q6
15 Q5
14 D5
13 D4
12 Q4
11 CP
001aae053
Fig 5. Pin configuration DIP20, SO20, SSOP20 and
TSSOP20
terminal 1
index area
74HC273
74HCT273
Q0 2
D0 3
D1 4
Q1 5
Q2 6
D2 7
D3 8
Q3 9
GND (1)
19 Q7
18 D7
17 D6
16 Q6
15 Q5
14 D5
13 D4
12 Q4
001aae054
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 DHVQFN20
5.2 Pin description
Table 2. Pin description
Symbol
MR
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7
D0, D1, D2, D3, D4, D5, D6, D7
GND
CP
VCC
Pin
1
2, 5, 6, 9, 12, 15, 16, 19
3, 4, 7, 8, 13, 14, 17, 18
10
11
20
Description
master reset input (active LOW)
flip-flop output
data input
ground (0 V)
clock input (LOW-to-HIGH, edge-triggered)
supply voltage
74HC_HCT273
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 10 June 2013
© NXP B.V. 2013. All rights reserved.
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