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74HC191DB,112
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P23
74HC191
All informatio
n provided in thi
s document is su
bject to legal
disclaimers.
© NXP Semiconduc
tors N.V
. 201
7. All rights res
erved.
Product data sheet
Rev
. 3 — 3 Janu
ary 2017
15 of 22
NXP Semiconductors
74HC191
Presett
able synchronous 4-bit binary up/down counter
T
est data is given in
T
able 10
.
T
est circuit definitions:
R
T
= T
ermination resistance should be equal to output impedance Z
o
of the pulse generator
C
L
= Load capacitance including jig and probe cap
acitance
R
L
= Load resistance.
S1 = T
est selection switch
Fig 18.
T
est
circuit for measu
ring switching tim
es
9
0
9
0
W
:
W
:
9
9
,
9
,
QHJD
WLYH
SXOV
H
SRVL
WLYH
SXOV
H
9
9
0
9
0
W
I
W
U
W
U
W
I
D
DG
'87
9
&&
9
&&
9
,
9
2
5
7
5
/
6
&
/
RSHQ
*
T
able 10.
T
est da
ta
Input
Load
S1 position
V
I
t
r
, t
f
C
L
R
L
t
PHL
, t
PLH
V
CC
6 ns
15 pF
, 50 pF
1 k
open
74HC191
All informatio
n provided in thi
s document is su
bject to legal
disclaimers.
© NXP Semiconduc
tors N.V
. 201
7. All rights res
erved.
Product data sheet
Rev
. 3 — 3 Janu
ary 2017
16 of 22
NXP Semiconductors
74HC191
Presett
able synchronous 4-bit binary up/down counter
12. Package
outline
Fig 19.
Package
outline SOT109-1 (SO1
6)
;
Z
0
ș
$
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627
74HC191
All informatio
n provided in thi
s document is su
bject to legal
disclaimers.
© NXP Semiconduc
tors N.V
. 201
7. All rights res
erved.
Product data sheet
Rev
. 3 — 3 Janu
ary 2017
17 of 22
NXP Semiconductors
74HC191
Presett
able synchronous 4-bit binary up/down counter
Fig 20.
Package
outline SOT338-1 (SSOP16
)
81,7
$
$
$
E
S
F
'
(
H
+
(
/
/
S
4
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Y
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627
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0
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02
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627
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PD[
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P23
74HC191DB,112
Mfr. #:
Buy 74HC191DB,112
Manufacturer:
Nexperia
Description:
Counter ICs SYNC BIN U/D COUNTER
Lifecycle:
New from this manufacturer.
Delivery:
DHL
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EMS
Payment:
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