SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
D Dual Versions of Highly Stable SN54121
D
TYPE
MAXIMUM
OUTPUT
PULSE
LENGTH(S)
SN54221
21
SN74221
28
SN54LS221
49
SN74LS221
70
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
VCC
1Rext/Cext
1Cext
1Q
2Q
2CLR
2B
2A
SN54LS221 . . . FK PACKAGE
(TOP VIEW)
1B
1A
NC
VCC
1R ext /Cext
D
1A
1B
1CLR
1Q
2Q
2Cext
2Rext/Cext
GND
description/ordering information
1CLR
1Q
NC
2Q
2Cext
4
3 2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
2R ext/Cext
The ’221 and ’LS221 devices are dual
multivibrators with performance characteristics
virtually identical to those of the ’121 devices.
Each multivibrator features a negative-transitiontriggered input and a positive-transition-triggered
input, either of which can be used as an inhibit
input.
1Cext
1Q
NC
2Q
2CLR
GND
NC
2A
2B
D
SN54221, SN54LS221 . . . J PACKAGE
SN74221 . . . N PACKAGE
SN74LS221 . . . D, DB, N, OR NS PACKAGE
(TOP VIEW)
and SN74121 One Shots
SN54221 and SN74221 Demonstrate
Electrical and Switching Characteristics
That Are Virtually Identical to the SN54121
and SN74121 One Shots
Pinout Is Identical to the SN54123,
SN74123, SN54LS123, and SN74LS123
Overriding Clear Terminates Output Pulse
NC − No internal connection
ORDERING INFORMATION
PDIP − N
0°C to 70°C
−55°C
−55
C to 125
125°C
C
ORDERABLE
PART NUMBER
PACKAGE†
TA
Tube
TOP-SIDE
MARKING
SN74221N
SN74221N
SN74LS221N
SN74LS221N
Tube
SN74LS221D
Tape and reel
SN74LS221DR
SOP − NS
Tape and reel
SN74LS221NSR
74LS221
SSOP − DB
Tape and reel
SN74LS221DBR
LS221
SNJ54221J
SNJ54221J
SNJ54LS221J
SNJ54LS221J
SNJ54LS221FK
SNJ54LS221FK
SOIC − D
CDIP − J
Tube
LCCC − FK
Tube
LS221
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2004, Texas Instruments Incorporated
!"# $ %&'# "$ (&)*%"# +"#',
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#'$#1 "** (""!'#'$,
(+&%#$ %!(*"# # 2343 "** (""!'#'$ "' #'$#'+
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(%'$$1 +'$ # '%'$$"*0 %*&+' #'$#1 "** (""!'#'$,
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1
SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
description/ordering information (continued)
Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input
pulse. Schmitt-trigger input circuitry (TTL hysteresis) for B input allows jitter-free triggering from inputs with
transition at rates as slow as 1 V/s, providing the circuit with excellent noise immunity, typically of 1.2 V. A high
immunity to VCC noise, typically of 1.5 V, also is provided by internal latching circuitry.
Once fired, the outputs are independent of further transitions of the A and B inputs and are a function of the timing
components, or the output pulses can be terminated by the overriding clear. Input pulses can be of any duration
relative to the output pulse. Output pulse length can be varied from 35 ns to the maximum by choosing
appropriate timing components. With Rext = 2 kΩ and Cext = 0, an output pulse typically of 30 ns is achieved
that can be used as a dc-triggered reset signal. Output rise and fall times are TTL compatible and independent
of pulse length. Typical triggering and clearing sequences are shown as a part of the switching characteristics
waveforms.
Pulse-width stability is achieved through internal compensation and is virtually independent of VCC and
temperature. In most applications, pulse stability is limited only by the accuracy of external timing components.
Jitter-free operation is maintained over the full temperature and VCC ranges for more than six decades of timing
capacitance (10 pF to 10 µF) and more than one decade of timing resistance (2 kΩ to 30 kΩ for the SN54221,
2 kΩ to 40 kΩ for the SN74221, 2 kΩ to 70 kΩ for the SN54LS221, and 2 kΩ to 100 kΩ for the SN74LS221).
Throughout these ranges, pulse width is defined by the relationship: tw(out) = CextRext In2 ≈ 0.7 CextRext. In
circuits where pulse cutoff is not critical, timing capacitance up to 1000 µF and timing resistance as low as 1.4 kΩ
can be used. Also, the range of jitter-free output pulse widths is extended if VCC is held to 5 V and free-air
temperature is 25°C. Duty cycles as high as 90% are achieved when using maximum recommended RT. Higher
duty cycles are available if a certain amount of pulse-width jitter is allowed.
The variance in output pulse width from device to device typically is less than ±0.5% for given external timing
components. An example of this distribution for the ’221 is shown in Figure 3. Variations in output pulse width
versus supply voltage and temperature for the ’221 are shown in Figures 4 and 5, respectively.
Pin assignments for these devices are identical to those of the SN54123/SN74123 or SN54LS123/SN74LS123
so that the ’221 or ’LS221 devices can be substituted for those products in systems not using the retrigger by
merely changing the value of Rext and/or Cext; however, the polarity of the capacitor must be changed.
FUNCTION TABLE
(each monostable multivibrator)
INPUTS
OUTPUTS
CLR
A
B
Q
Q
L
X
X
L
H
X
H
X
L
H
X
X
L
L
H
L
↑
†
†
H
†
†
H
†
†
H
↑‡
↓
L
H
† Pulsed-output patterns are tested during
AC switching at 25°C with Rext = 2 kΩ, and
Cext = 80 pF.
‡ This condition is true only if the output of
the latch formed by the two NAND gates
has been conditioned to the logic 1 state
prior to CLR going high. This latch is
conditioned by taking either A high or
B low while CLR is inactive (high).
2
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SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
timing component connections
VCC
Rext
To Cext
Terminal
To Rext/Cext
Terminal
NOTE: Due to the internal circuit, the Rext/Cext terminal never is more positive than the Cext terminal.
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3
SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
schematics of inputs and outputs
SN54/74221
EQUIVALENT OF EACH INPUT
TYPICAL OF ALL OUTPUTS
VCC
VCC
100 Ω NOM
Req
Input
Output
A Input: Req = 4 kΩ NOM
B, CLR Input: Req = 2 kΩ NOM
SN54/74LS221
EQUIVALENT OF EACH INPUT
TYPICAL OF ALL OUTPUTS
VCC
VCC
120 Ω NOM
Req
Input
Output
A Input: Req = 25 kΩ NOM
B Input: Req = 15.4 kΩ NOM
CLR: Req = 12.5 kΩ NOM
4
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SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage range, VI (see Note 1): ’LS221 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
’221 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W
DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 3)
SN54221
VCC
IOH
Supply voltage
IOL
Low-level output current
∆v/∆t
MIN
NOM
4.5
5
High-level output current
Rise or fall of input pulse rate
SN74221
MAX
MIN
NOM
5.5
4.75
5
−800
16
MAX
UNIT
5.25
V
−800
µA
16
mA
B input
1*
1
V/s
A input
1*
1
V/µs
TA
Operating free-air temperature
−55
125
0
70
°C
∗ On products compliant to MIL-PRF-38535, this parameter is not production tested.
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
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SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS†
VT+
Positive-going threshold voltage,
B input
VCC = MIN
VT−
Negative-going threshold voltage,
B input
VCC = MIN
MIN
SN54221
TYP‡
MAX
1.55
VIK
VOH
VCC = MIN,
VCC = MIN,
II = −12 mA
IOH = −800 µA
VOL
II
VCC = MIN,
VCC = MAX,
IOL = 16 mA
VI = 5.5 V
0.8*
1.35
2.4
3.4
CLR, B input
VCC = MAX,
VI = 2.4 V
0.2
VCC = MAX,
VI = 0.4 V
A input
IIL
CLR, B input
IOS§
ICC
VCC = MAX
Quiescent
Triggered
2*
SN74221
TYP‡
MAX
1.55
0.8
1.35
2.4
3.4
−1.5
A input
IIH
MIN
−20
VCC = MAX
2
0.2
1
1
40
80
80
−1.6
−1.6
−3.2
−3.2
−18
V
V
0.4
40
−55
V
V
−1.5
0.4
UNIT
−55
26
50*
26
50
46
80*
46
80
V
mA
µA
A
mA
mA
mA
∗ On products compliant to MIL-PRF-38535, this parameter is not production tested.
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡ All typical values are at VCC = 5 V, TA = 25°C.
§ Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
timing requirements over recommended ranges of supply voltage and operating free-air
temperature
tw
Pulse duration
tsu
Setup time, inactive-state¶
Rext
External timing resistance
Cext
External timing capacitance
Output duty cycle
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SN74221
MIN
MAX
A or B input
50
50
CLR
20
20
CLR
15
15
MAX
ns
1.4*
30*
1.4
40
kΩ
0*
1000*
0
1000
µF
67%
67%
Rext = MAX Rext
90%
90%
• DALLAS, TEXAS 75265
UNIT
ns
Rext = 2 kΩ
∗ On products compliant to MIL-PRF-38535, this parameter is not production tested.
¶ Inactive-state setup time also is referred to as recovery time.
6
SN54221
MIN
SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
switching characteristics VCC = 5 V, RL = 400 Ω, TA = 25_C (see Figures 1 and 2)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
SN54221
TEST CONDITIONS
MIN
A
tPLH
B
Q
Cext = 80 pF,
A
tPHL
tPHL
tPLH
tw
B
Rext = 2 kΩ
Q
TYP
MAX
TYP
MAX
45
70
45
70
35
55
35
55
50
80
50
80
40
65
40
65
Q
CLR
A or B
Q
Q or Q
SN74221
MIN
27
27
40
40
Cext = 80 pF,
Rext = 2 kΩ
Cext = 80 pF,
Rext = 2 kΩ
70
110
150
70
110
150
Cext = 0,
Rext = 2 kΩ
17
30
50
17
30
50
Cext = 100 pF,
Rext = 10 kΩ
650
700
750
650
700
750
Cext = 1 µF,
Rext = 10 kΩ
6.5*
7
7.5*
6.5
7
7.5
MAX
MIN
NOM
5.5
4.75
5
UNIT
ns
ns
ns
ms
∗ On products compliant to MIL-PRF-38535, this parameter is not production tested.
recommended operating conditions (see Note 4)
SN54LS221
VCC
IOH
Supply voltage
IOL
Low-level output current
∆v/∆t
MIN
NOM
4.5
5
High-level output current
−400
4
B input
Rise or fall of input pulse rate
SN74LS221
A input
1*
1*
MAX
UNIT
5.25
V
−400
µA
8
mA
1
V/s
1
V/µs
TA
Operating free-air temperature
−55
125
0
70
°C
∗ On products compliant to MIL-PRF-38535, this parameter is not production tested.
NOTE 4: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
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SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VT+
Positive-going threshold voltage,
B input
VCC = MIN
VT−
Negative-going threshold voltage,
B input
VCC = MIN
VIK
VOH
MIN
1
VCC = MIN,
VCC = MIN,
II = −18 mA
IOH = −400 µA
VOL
VCC = MIN
IOL = 4 mA
IOL = 8 mA
II
VCC = MAX,
VI = 7 V
VCC = MAX,
VI = 2.7 V
IIH
SN54LS221
TYP‡
MAX
TEST CONDITIONS†
0.7*
0.9
2.5
3.4
CLR, B input
IOS§
ICC
VCC = MAX,
0.25
Triggered
1
V
2*
0.8
0.9
2.7
3.4
VI = 0.4 V
−20
VCC = MAX
2
V
−1.5
0.4
0.4
0.35
0.5
mA
µA
20
20
−0.4
−0.8
−0.8
−20
V
0.1
−0.4
−100
V
V
0.25
0.1
VCC = MAX
Quiescent
UNIT
−1.5
A input
IIL
SN74LS221
TYP‡
MAX
MIN
−100
4.7
11
4.7
11
19
27*
19
27
mA
mA
mA
∗ On products compliant to MIL-PRF-38535, this parameter is not production tested.
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡ All typical values are at VCC = 5 V, TA = 25°C.
§ Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
timing requirements over recommended ranges of supply voltage and operating free-air
temperature
SN54LS221
MIN
tw
Pulse duration
tsu
Setup time, inactive state¶
Rext
External timing resistance
Cext
External timing capacitance
50
50
40
40
RT = 2 kΩ
RT = MAX Rext
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MIN
CLR
∗ On products compliant to MIL-PRF-38535, this parameter is not production tested.
¶ Inactive-state setup time also is referred to as recovery time.
8
SN74LS221
A or B
CLR
Output duty cycle
MAX
• DALLAS, TEXAS 75265
15
MAX
UNIT
ns
15
ns
1.4*
70*
1.4
100
kΩ
0*
1000*
0
1000
µF
50%
50%
90%
90%
SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
switching characteristics VCC = 5 V, RL = 2 kΩ, TA = 25_C (see Figures 1 and 2)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
SN54LS221
TEST CONDITIONS
MIN
A
tPLH
B
Q
Cext = 80 pF,
A
tPHL
tPHL
tPLH
tw
B
Rext = 2 kΩ
Q
Q
CLR
A or B
Q
Q or Q
SN74LS221
TYP
MAX
45
MIN
TYP
MAX
70
45
70
35
55
35
55
50
80
50
80
40
65
40
65
35
55
35
55
44
65
44
65
Cext = 80 pF,
Rext = 2 kΩ
Cext = 80 pF,
Rext = 2 kΩ
70
120
150
70
120
150
Cext = 0,
Rext = 2 kΩ
20
47
70
20
47
70
Cext = 100 pF,
Rext = 10 kΩ
670
740
810
670
740
810
Cext = 1 µF,
Rext = 10 kΩ
6*
6.9
7.5*
6
6.9
7.5
UNIT
ns
ns
ns
ms
∗ On products compliant to MIL-PRF-38535, this parameter is not production tested.
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9
SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
PARAMETER MEASUREMENT INFORMATION
tw
3V
B†
0V
≥ 60 ns
3V
CLR
0V
tPLH
tPHL
VOH
Q
VOL
tPHL
tPLH
VOH
Q
VOL
CONDITION 1: TRIGGER FROM B, THEN CLR
3V
B†
0V
≥ 60 ns
3V
CLR
0V
VOH
Q
VOL
CONDITION 2: TRIGGER FROM B, THEN CLR
3V
B†
0V
≥ 50 ns
≥0
tsu
3V
CLR
0V
tw
Triggered
VOH
Q
VOL
Not Triggered
CONDITION 3: CLR OVERRIDING B, THEN TRIGGER FROM B
† A is low.
Figure 1. Switching Characteristics
10
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SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
PARAMETER MEASUREMENT INFORMATION
3V
B†
0V
≥ 50 ns
≥ 50 ns
3V
CLR
0V
VOH
Q
VOL
CONDITION 4: TRIGGERING FROM POSITIVE TRANSITION OF CLR
tw
3V
A‡
0V
≥ 60 ns
3V
CLR
0V
tPLH
tPHL
VOH
Q
VOL
tPHL
tPLH
VOH
Q
VOL
CONDITION 5: TRIGGER FROM A, THEN CLR
3V
A‡
0V
tw
VOH
Q
VOL
tw
VOH
Q
VOL
CONDITION 6: TRIGGER FROM A
† A is low.
‡ B and CLR are high.
NOTES: A. Input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO ≈ 50Ω; for SN54/74221, tr ≤ 7 ns,
tf ≤ 7 ns, for SN54/74LS221, tr ≤ 15 ns, tf ≤ 6 ns.
B. All measurements are made between the 1.5-V points of the indicated transitions for the SN54/74221 or between the 1.3-V points
for the SN54/74LS221.
Figure 1. Switching Characteristics (Continued)
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11
SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
PARAMETER MEASUREMENT INFORMATION
VCC
Test
Point
RL
From Output
Under Test
(see Note B)
CL = 15 pF
(see Note A)
High-Level
Pulse
tw
Low-Level
Pulse
LOAD CIRCUIT FOR
BI-STATE
TOTEM-POLE OUTPUTS
VOLTAGE WAVEFORMS
PULSE DURATIONS
3V
Input
tPLH
3V
Timing
Input
VOH
In-Phase
Output
0V
tsu
th
tPHL
3V
Data
Input
0V
0V
tPHL
VOL
tPLH
VOH
Out-of-Phase
Output
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
NOTES: A.
B.
C.
D.
CL includes probe and jig capacitance.
All diodes are 1N3064 or equivalent.
In the examples above, the phase relationships between inputs and outputs have been chosen arbitrarily.
All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO ≈ 50 Ω and, for SN54/74221,
tr ≤ 7 ns, tf ≤ 7 ns, for SN54/74LS221, tr ≤ 15 ns, tf ≤ 6 ns.
E. All measurements are made between the 1.5-V points of the indicated transitions for the SN54/74221 or between the 1.3-V points
for the SN54/74LS221.
Figure 2. Load Circuits and Voltage Waveforms
12
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SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
TYPICAL CHARACTERISTICS (SN54/74221 ONLY)†
VARIATION IN OUTPUT PULSE
vs
SUPPLY VOLTAGE
DISTRIBUTION OF UNITS
FOR
OUTPUT PULSE
1
Relative Frequency of Occurrence
∆ t w − Variation in Output Pulse − %
VCC = 5 V
TA = 25°C
Median
+0.5%
Cext = 60 pF
Rext = 10 kΩ
TA = 25°C
0.5
tw ≈ 420 ns
at VCC = 5 V
0
− 0.5
Median
+0.5%
−1
4.5
Median
4.75
5.5
VCC − Supply Voltage − V
tw − Output Pulse
Figure 3
Figure 4
VARIATION IN OUTPUT PULSE
vs
FREE-AIR TEMPERATURE
OUTPUT PULSE
vs
TIMING RESISTOR VALUE
1
10 ms
Cext = 1 µ F
VCC = 5 V
Cext = 60 pF
Rext = 10 kΩ
1 ms
Cext = 0.1 µ F
0.5
t w − Output Pulse
∆ t w − Variation in Output Pulse − %
5.25
5
tw ≈ 420 ns
at TA = 25°C
0
100 µs
Cext = 0.01 µ F
10 µs
Cext = 1000 pF
1 µs
Cext = 100 pF
− 0.5
Cext = 10 pF
100 ns
−1
−75 −50
VCC = 5 V
TA = 25°C
10 ns
−25
0
25
50
75
100
125
1
2
TA − Free-Air Temperature − °C
See Note A
4
7 10
20
40
70 100
Rext − Timing Resistor Value − kΩ
Figure 5
Figure 6
† Data for temperatures below 0°C and above 70°C, and for supply voltages below 4.75 V and above 5.25 V are applicable for the SN54221 only.
NOTE A: These values of resistance exceed the maximum recommended for use over the full military temperature range of the SN54221.
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13
PACKAGE OPTION ADDENDUM
www.ti.com
9-Oct-2007
PACKAGING INFORMATION
Orderable Device
Status (1)
5962-8771101EA
ACTIVE
CDIP
J
16
1
TBD
76042012A
ACTIVE
LCCC
FK
20
1
TBD
7604201EA
ACTIVE
CDIP
J
16
1
TBD
A42 SNPB
N / A for Pkg Type
7604201FA
ACTIVE
CFP
W
16
1
TBD
A42
N / A for Pkg Type
JM38510/31402B2A
ACTIVE
LCCC
FK
20
1
TBD
JM38510/31402BEA
ACTIVE
CDIP
J
16
1
TBD
A42 SNPB
N / A for Pkg Type
JM38510/31402BFA
ACTIVE
CFP
W
16
1
TBD
A42
N / A for Pkg Type
SN54221J
ACTIVE
CDIP
J
16
1
TBD
A42 SNPB
N / A for Pkg Type
SN54LS221J
ACTIVE
CDIP
J
16
1
TBD
A42 SNPB
N / A for Pkg Type
SN74221N
ACTIVE
PDIP
N
16
25
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
SN74221NE4
ACTIVE
PDIP
N
16
25
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
SN74LS221D
ACTIVE
SOIC
D
16
40
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74LS221DBR
ACTIVE
SSOP
DB
16
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74LS221DBRE4
ACTIVE
SSOP
DB
16
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74LS221DBRG4
ACTIVE
SSOP
DB
16
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74LS221DE4
ACTIVE
SOIC
D
16
40
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74LS221DG4
ACTIVE
SOIC
D
16
40
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74LS221DR
ACTIVE
SOIC
D
16
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74LS221DRE4
ACTIVE
SOIC
D
16
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74LS221DRG4
ACTIVE
SOIC
D
16
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74LS221N
ACTIVE
PDIP
N
16
CU NIPDAU
N / A for Pkg Type
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
Lead/Ball Finish
A42 SNPB
MSL Peak Temp (3)
N / A for Pkg Type
POST-PLATE N / A for Pkg Type
POST-PLATE N / A for Pkg Type
25
Pb-Free
(RoHS)
TBD
Call TI
25
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
SN74LS221N3
OBSOLETE
PDIP
N
16
SN74LS221NE4
ACTIVE
PDIP
N
16
SN74LS221NSR
ACTIVE
SO
NS
16
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74LS221NSRE4
ACTIVE
SO
NS
16
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74LS221NSRG4
ACTIVE
SO
NS
16
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SNJ54221J
ACTIVE
CDIP
J
16
1
TBD
SNJ54LS221FK
ACTIVE
LCCC
FK
20
1
TBD
SNJ54LS221J
ACTIVE
CDIP
J
16
1
TBD
A42 SNPB
N / A for Pkg Type
SNJ54LS221W
ACTIVE
CFP
W
16
1
TBD
A42
N / A for Pkg Type
Addendum-Page 1
A42 SNPB
Call TI
N / A for Pkg Type
POST-PLATE N / A for Pkg Type
PACKAGE OPTION ADDENDUM
www.ti.com
9-Oct-2007
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
19-Mar-2008
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SN74LS221DBR
SSOP
SN74LS221DR
SN74LS221NSR
SPQ
Reel
Reel
Diameter Width
(mm) W1 (mm)
A0 (mm)
B0 (mm)
K0 (mm)
P1
(mm)
W
Pin1
(mm) Quadrant
12.0
16.0
Q1
DB
16
2000
330.0
16.4
8.2
6.6
2.5
SOIC
D
16
2500
330.0
16.4
6.5
10.3
2.1
8.0
16.0
Q1
SO
NS
16
2000
330.0
16.4
8.2
10.5
2.5
12.0
16.0
Q1
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
19-Mar-2008
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
SN74LS221DBR
SSOP
DB
16
2000
346.0
346.0
33.0
SN74LS221DR
SOIC
D
16
2500
333.2
345.9
28.6
SN74LS221NSR
SO
NS
16
2000
346.0
346.0
33.0
Pack Materials-Page 2
MECHANICAL DATA
MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001
DB (R-PDSO-G**)
PLASTIC SMALL-OUTLINE
28 PINS SHOWN
0,38
0,22
0,65
28
0,15 M
15
0,25
0,09
8,20
7,40
5,60
5,00
Gage Plane
1
14
0,25
A
0°–ā8°
0,95
0,55
Seating Plane
2,00 MAX
0,10
0,05 MIN
PINS **
14
16
20
24
28
30
38
A MAX
6,50
6,50
7,50
8,50
10,50
10,50
12,90
A MIN
5,90
5,90
6,90
7,90
9,90
9,90
12,30
DIM
4040065 /E 12/01
NOTES: A.
B.
C.
D.
All linear dimensions are in millimeters.
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion not to exceed 0,15.
Falls within JEDEC MO-150
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
MECHANICAL DATA
MLCC006B – OCTOBER 1996
FK (S-CQCC-N**)
LEADLESS CERAMIC CHIP CARRIER
28 TERMINAL SHOWN
18
17
16
15
14
13
NO. OF
TERMINALS
**
12
19
11
20
10
A
B
MIN
MAX
MIN
MAX
20
0.342
(8,69)
0.358
(9,09)
0.307
(7,80)
0.358
(9,09)
28
0.442
(11,23)
0.458
(11,63)
0.406
(10,31)
0.458
(11,63)
21
9
22
8
44
0.640
(16,26)
0.660
(16,76)
0.495
(12,58)
0.560
(14,22)
23
7
52
0.739
(18,78)
0.761
(19,32)
0.495
(12,58)
0.560
(14,22)
24
6
68
0.938
(23,83)
0.962
(24,43)
0.850
(21,6)
0.858
(21,8)
84
1.141
(28,99)
1.165
(29,59)
1.047
(26,6)
1.063
(27,0)
B SQ
A SQ
25
5
26
27
28
1
2
3
4
0.080 (2,03)
0.064 (1,63)
0.020 (0,51)
0.010 (0,25)
0.020 (0,51)
0.010 (0,25)
0.055 (1,40)
0.045 (1,14)
0.045 (1,14)
0.035 (0,89)
0.045 (1,14)
0.035 (0,89)
0.028 (0,71)
0.022 (0,54)
0.050 (1,27)
4040140 / D 10/96
NOTES: A.
B.
C.
D.
E.
All linear dimensions are in inches (millimeters).
This drawing is subject to change without notice.
This package can be hermetically sealed with a metal lid.
The terminals are gold plated.
Falls within JEDEC MS-004
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
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