SN74ACT14DB [TI]
HEX SCHMITT-TRIGGER INVERTER; 六角施密特触发器逆变器
| 型号： | SN74ACT14DB |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | HEX SCHMITT-TRIGGER INVERTER |
| 文件： | 总5页 (文件大小：70K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54ACT14, SN74ACT14
HEX SCHMITT-TRIGGER INVERTER
SCAS557E – DECEMBER 1995 – REVISED JANUARY 2000
Inputs Are TTL-Voltage Compatible
SN54ACT14 . . . J OR W PACKAGE
SN74ACT14 . . . D, DB, N, OR PW PACKAGE
(TOP VIEW)
EPIC (Enhanced-Performance Implanted
CMOS) 1-µm Process
Package Options Include Plastic
1A
1Y
V
CC
1
2
3
4
5
6
7
14
13
12
11
10
9
Small-Outline (D), Shrink Small-Outline
(DB), and Thin-Shrink Small-Outline (PW)
Packages, Ceramic Chip Carriers (FK) and
Flatpacks (W), and Standard Plastic (N) and
Ceramic (J) DIPs
6A
6Y
5A
5Y
4A
4Y
2A
2Y
3A
3Y
GND
8
description
These Schmitt-trigger devices contain six
independent inverters. They perform the Boolean
functionY=A. BecauseoftheSchmittaction, they
have different input threshold levels for
SN54ACT14 . . . FK PACKAGE
(TOP VIEW)
positive-going (V ) and for negative-going (V
signals.
)
T+
T–
3
2
1
20 19
18
6Y
NC
5A
NC
5Y
2A
NC
2Y
4
5
6
7
8
17
16
15
14
These circuits are temperature compensated and
can be triggered from the slowest of input ramps
and still give clean, jitter-free output signals. They
NC
3A
also have
a
greater noise margin than
9 10 11 12 13
conventional inverters.
SN54ACT14 is characterized for operation over
the full military temperature range of –55°C to
125°C. The SN74ACT14 is characterized for
operation from –40°C to 85°C.
NC – No internal connection
FUNCTION TABLE
(each inverter)
INPUT
A
OUTPUT
Y
H
L
L
H
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.
EPIC is a trademark of Texas Instruments Incorporated.
Copyright 2000, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ACT14, SN74ACT14
HEX SCHMITT-TRIGGER INVERTER
SCAS557E – DECEMBER 1995 – REVISED JANUARY 2000
†
logic symbol
logic diagram (positive logic)
1
2
4
1A
3
1Y
2Y
A
Y
2A
5
6
8
3A
3Y
4Y
5Y
9
4A
10
11
5A
12
13
6Y
6A
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
Pin numbers shown are for the D, DB, J, N, PW, or W packages.
‡
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
CC
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
+ 0.5 V
+ 0.5 V
I
CC
CC
Output voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
O
Input clamp current, I (V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
IK
I
I
CC
Output clamp current, I
(V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
OK
O O CC
Continuous output current, I (V = 0 to V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through V
Package thermal impedance, θ (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86°C/W
O
O
CC
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±200 mA
JA
DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113°C/W
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
stg
‡
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 voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51.
recommended operating conditions (see Note 3)
SN54ACT14
SN74ACT14
UNIT
MIN
4.5
MAX
MIN
4.5
MAX
V
V
V
V
V
Supply voltage
5.5
5.5
V
V
CC
IH
IL
High-level input voltage
Low-level input voltage
Input voltage
2.1
2.1
0.5
0.5
V
0
0
V
V
0
0
V
V
V
I
CC
CC
Output voltage
V
O
CC
CC
I
I
High-level output current
Low-level output current
Operating free-air temperature
–24
24
–24
24
mA
mA
°C
OH
OL
T
–55
125
–40
85
A
NOTE 3: All unused inputs of the device must be held at V
or GND to ensure proper device operation. Refer to the TI application report,
CC
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ACT14, SN74ACT14
HEX SCHMITT-TRIGGER INVERTER
SCAS557E – DECEMBER 1995 – REVISED JANUARY 2000
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
A
= 25°C
TYP
1.5
SN54ACT14
SN74ACT14
PARAMETER
TEST CONDITIONS
V
UNIT
CC
MIN
1.2
MAX
1.9
2.1
1.2
1.4
1.4
1.5
MIN
1.2
1.4
0.5
0.6
0.4
0.4
4.4
5.4
3.7
4.7
3.85
MAX
1.9
2.1
1.2
1.4
1.4
1.5
MIN
1.2
MAX
1.9
2.1
1.2
1.4
1.4
1.5
4.5 V
5.5 V
4.5 V
5.5 V
4.5 V
5.5 V
4.5 V
5.5 V
4.5 V
5.5 V
5.5 V
5.5 V
4.5 V
5.5 V
4.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5.5 V
V
T+
Positive-going threshold
V
V
V
1.4
1.7
1.4
0.5
0.9
0.5
V
T–
Negative-going threshold
0.6
1
0.6
0.4
0.6
0.4
∆V
T
Hysteresis (V – V
T+
)
T–
0.4
0.6
0.4
4.4
4.49
5.49
4.4
I
I
= –50 µA
OH
5.4
5.4
3.86
4.86
3.76
4.76
V
OH
= –24 mA
V
OH
†
†
I
I
= –50 mA
= –75 mA
OH
3.85
OH
0.001
0.001
0.1
0.1
0.1
0.1
0.1
0.1
I
= 50 µA
OL
OL
0.36
0.36
0.5
0.44
0.44
V
OL
I
= 24 mA
V
0.5
†
†
I
I
= 50 mA
1.65
OL
= 75 mA
1.65
±1
OL
I
I
V = V
or GND
or GND,
±0.1
±1
µA
µA
I
I
CC
CC
V = V
I
O
= 0
CC
2
40
20
CC
I
One input at 3.4 V,
Other inputs at GND or V
‡
∆I
CC
5.5 V
5 V
0.6
4.5
1.6
1.5
mA
pF
C
V = V or GND
i
I
CC
†
‡
Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms.
This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or V
.
CC
switching characteristics over recommended operating free-air temperature range,
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
V
CC
T = 25°C
A
SN54ACT14
SN74ACT14
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
MIN
1.5
MAX
11.5
10
MIN
1
MAX
14
MIN
1
MAX
12.5
11
t
t
PLH
A
ns
Y
1.5
1
13
1
PHL
operating characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
= 50 pF, f = 1 MHz
TYP
UNIT
C
Power dissipation capacitance
C
20
pF
pd
L
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54ACT14, SN74ACT14
HEX SCHMITT-TRIGGER INVERTER
SCAS557E – DECEMBER 1995 – REVISED JANUARY 2000
PARAMETER MEASUREMENT INFORMATION
3 V
0 V
Input
(see Note B)
TEST
/t
S1
1.5 V
1.5 V
t
Open
PLH PHL
t
t
PHL
PLH
2 × V
CC
Open
V
OH
In-Phase
Output
S1
50% V
50% V
500 Ω
CC
CC
From Output
Under Test
V
OL
t
t
C
= 50 pF
PHL
PLH
L
500 Ω
(see Note A)
V
OH
50% V
CC
Out-of-Phase
Output
50% V
CC
V
OL
LOAD CIRCUIT
C includes probe and jig capacitance.
L
VOLTAGE WAVEFORMS
NOTES: A.
B. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, Z = 50 Ω, t ≤ 2.5 ns, t ≤ 2.5 ns.
O
r
f
C. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
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Copyright 2000, Texas Instruments Incorporated
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