SN54LV221A, SN74LV221A
DUAL MONOSTABLE MULTIVIBRATORS
WITH SCHMITT TRIGGER INPUTS
SCLS450G DECEMBER 1999 REVISED APRIL 2005
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching
characteristics
over
recommended
operating
free-air
temperature
range,
VCC = 2.5 V ± 0.2 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
TEST
TA = 25°C
SN54LV221A
SN74LV221A
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
TEST
CONDITIONS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
A or B
Q or Q
14.6*
31.4*
1*
37*
1
37
tpd
CLR
Q or Q
CL = 15 pF
13.2*
25*
1*
29.5*
1
29.5
ns
tpd
CLR trigger
Q or Q
CL = 15 pF
15.2*
33.4*
1*
39*
1
39
ns
A or B
Q or Q
16.7
36
1
42
1
42
tpd
CLR
Q or Q
CL = 50 pF
15
32.8
1
34.5
1
34.5
ns
tpd
CLR trigger
Q or Q
CL = 50 pF
17.4
38
1
44
1
44
ns
CL = 50 pF,
Cext = 28 pF,
Rext = 2 k
203
260
320
ns
tw
Q or Q
CL = 50 pF,
Cext = 0.01 F,
Rext = 10 k
90
100
110
90
110
90
110
ms
CL = 50 pF,
Cext = 0.1 F,
Rext = 10 k
0.9
1
1.1
0.9
1.1
0.9
1.1
ms
tw
CL = 50 pF
±1
%
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
tw = Pulse duration at Q and Q outputs
tw = Output pulse-duration variation (Q and Q) between circuits in same package
switching
characteristics
over
recommended
operating
free-air
temperature
range,
VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
TEST
TA = 25°C
SN54LV221A
SN74LV221A
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
TEST
CONDITIONS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
A or B
Q or Q
10.2*
20.6*
1*
24*
1
24
tpd
CLR
Q or Q
CL = 15 pF
9.3*
15.8*
1*
18.5*
1
18.5
ns
tpd
CLR trigger
Q or Q
CL = 15 pF
10.6*
22.4*
1*
26*
1
26
ns
A or B
Q or Q
11.8
24.1
1
27.5
1
27.5
tpd
CLR
Q or Q
CL = 50 pF
10.6
19.3
1
22
1
22
ns
tpd
CLR trigger
Q or Q
CL = 50 pF
12.3
25.9
1
29.5
1
29.5
ns
CL = 50 pF,
Cext = 28 pF,
Rext = 2 k
186
240
300
ns
tw
Q or Q
CL = 50 pF,
Cext = 0.01 F,
Rext = 10 k
90
100
110
90
110
90
110
ms
CL = 50 pF,
Cext = 0.1 F,
Rext = 10 k
0.9
1
1.1
0.9
1.1
0.9
1.1
ms
tw
CL = 50 pF
±1
%
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
tw = Pulse duration at Q and Q outputs
tw = Output pulse-duration variation (Q and Q) between circuits in same package
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.