74HC191D データシートの表示（PDF） - NXP Semiconductors.
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74HC191D Datasheet PDF : 19 Pages
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Nexperia
74HC191
Presettable synchronous 4-bit binary up/down counter
3. Ordering information
Table 1. Ordering information
Type number Package
Temperature range Name Description
74HC191D -40 °C to +125 °C SO16
plastic small outline package; 16 leads; body width 3.9 mm
74HC191PW -40 °C to +125 °C TSSOP16 plastic thin shrink small outline package; 16 leads;
body width 4.4 mm
Version
SOT109-1
SOT403-1
4. Functional diagram
12
13
TC
15 D0
1 D1
10 D2
9 D3
11 PL
RC
Q0 3
Q1 2
Q2 6
Q3 7
U/D CE CP
5
Fig. 1. Logic symbol
4 14
aaa-024376
15 1 10 9
D0 D1 D2 D3
11
PL
RC
13
5
U/D PARALLEL LOAD
CIRCUIT
CE
4
TC
12
14
CP
BINARY
COUNTER
Q0 Q1 Q2 Q3
3267
Fig. 2. Functional diagram
aaa-024375
5. Pinning information
5.1. Pinning
74HC191
D1 1
Q1 2
16 VCC
15 D0
Q0 3
14 CP
CE 4
13 RC
U/D 5
12 TC
Q2 6
11 PL
Q3 7
10 D2
GND 8
9 D3
aaa-024377
Fig. 3. Pin configuration SOT109-1 (SO16)
74HC191
D1 1
Q1 2
Q0 3
CE 4
U/D 5
Q2 6
Q3 7
GND 8
16 VCC
15 D0
14 CP
13 RC
12 TC
11 PL
10 D2
9 D3
aaa-024378
Fig. 4. Pin configuration SOT403-1 (TSSOP16)
74HC191
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 5 October 2018
© Nexperia B.V. 2018. All rights reserved
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