SN54HCT14, SN74HCT14
HEX SCHMITT-TRIGGER INVERTERS
SCLS225E JULY 1995 REVISED JULY 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
Operating Voltage Range of 4.5 V to 5.5 V
D
Outputs Can Drive Up To 10 LSTTL Loads
D
Low Power Consumption, 20-
A Max I
CC
D
Typical t
pd
= 18 ns
D
4-mA Output Drive at 5 V
D
Low Input Current of 1
A Max
D
Inputs Are TTL-Voltage Compatible
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1A
1Y
2A
2Y
3A
3Y
GND
V
CC
6A
6Y
5A
5Y
4A
4Y
SN54HCT14 . . . J OR W PACKAGE
SN74HCT14 . . . D, DB, DGV, N, OR PW PACKAGE
(TOP VIEW)
3
2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
6Y
NC
5A
NC
5Y
2A
NC
2Y
NC
3A
1Y
1A
NC
4Y
4A
V
6A
3Y
GND
NC
SN54HCT14 . . . FK PACKAGE
(TOP VIEW)
CC
NC No internal connection
description/ordering information
The 'HCT14 devices contain six independent inverters. The devices perform the Boolean function Y = A in
positive logic.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP N
Tube of 25
SN74HCT14N
SN74HCT14N
Tube of 50
SN74HCT14D
SOIC D
Reel of 2500
SN74HCT14DR
HCT14
40
C to 85
C
Reel of 250
SN74HCT14DT
40
C to 85
C
SSOP DB
Reel of 2000
SN74HCT14DBR
HT14
TSSOP
PW
Reel of 2000
SN74HCT14PWR
HT14
TSSOP PW
Reel of 250
SN74HCT14PWT
HT14
TVSOP DGV
Reel of 2000
SN74HCT14DGVR
HT14
CDIP J
Tube of 25
SNJ54HCT14J
SNJ54HCT14J
55
C to 125
C
CFP W
Tube of 150
SNJ54HCT14W
SNJ54HCT14W
LCCC FK
Tube of 55
SNJ54HCT14FK
SNJ54HCT14FK
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE
(each inverter)
INPUT
A
OUTPUT
Y
H
L
L
H
Copyright
2003, Texas Instruments Incorporated
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.
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.
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.
SN54HCT14, SN74HCT14
HEX SCHMITT-TRIGGER INVERTERS
SCLS225E JULY 1995 REVISED JULY 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic diagram (positive logic)
A
Y
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
(see Note 1)
0.5 V to V
CC
+ 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, V
O
(see Note 1)
0.5 V to V
CC
+ 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0 or V
I
> V
CC
)
20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
CC
)
20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current, I
O
(V
O
= 0 to V
CC
)
25 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through V
CC
or GND
50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
JA
(see Note 2): D package
86
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DB package
96
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DGV package
127
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N package
80
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package
113
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
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 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 51-7.
recommended operating conditions (see Note 3)
SN54HCT14
SN74HCT14
UNIT
MIN
MAX
MIN
MAX
UNIT
VCC
Supply voltage
4.5
5.5
4.5
5.5
V
VI
Input voltage
0
VCC
0
VCC
V
VO
Output voltage
0
VCC
0
VCC
V
TA
Operating free-air temperature
55
125
40
85
C
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.
SN54HCT14, SN74HCT14
HEX SCHMITT-TRIGGER INVERTERS
SCLS225E JULY 1995 REVISED JULY 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25
C
SN54HCT14
SN74HCT14
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
VT+
Positive going
4.5 V
1.2
1.5
1.9
1.2
1.9
1.2
1.9
V
Positive-going
threshold
5.5 V
1.4
1.7
2.1
1.4
2.1
1.4
2.1
V
VT
Negative going
4.5 V
0.5
0.9
1.2
0.5
1.2
0.5
1.2
V
Negative-going
threshold
5.5 V
0.6
1
1.4
0.6
1.4
0.6
1.4
V
VT
Hysteresis
4.5 V
0.4
0.6
1.4
0.4
1.4
0.4
1.4
V
Hysteresis
(VT+ VT)
5.5 V
0.4
0.65
1.5
0.4
1.5
0.4
1.5
V
VOH
IOH = 20
A
4.5 V
4.4
4.49
4.4
4.4
V
VOH
IOH = 4 mA
4.5 V
3.98
4.3
3.7
3.84
V
VOL
IOL = 20
A
4.5 V
0.001
0.1
0.1
0.1
V
VOL
IOL = 4 mA
4.5 V
0.17
0.26
0.4
0.33
V
II
VI = VCC or GND
5.5 V
0.1
1
1
A
ICC
VI = VCC or GND,
IO = 0
5.5 V
2
40
20
A
ICC
One input at 0.5 V or 2.4 V,
Other inputs at GND or VCC
5.5 V
0.2
2.4
3
2.9
mA
Ci
VI = VCC or GND
5 V
3
10
10
10
pF
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 VCC.
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
VCC
TA = 25
C
SN54HCT14
SN74HCT14
UNIT
PARAMETER
(INPUT)
(OUTPUT)
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
t d
A
Y
4.5 V
20
32
48
40
ns
tpd
A
Y
5.5 V
18
30
45
38
ns
tt
Y
4.5 V
7
15
22
19
ns
tt
Y
5.5 V
6
14
20
17
ns
operating characteristics, T
A
= 25
C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load
10
pF
SN54HCT14, SN74HCT14
HEX SCHMITT-TRIGGER INVERTERS
SCLS225E JULY 1995 REVISED JULY 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
VOLTAGE WAVEFORM
INPUT RISE AND FALL TIMES
VOLTAGE WAVEFORMS
PROPAGATION DELAY AND OUTPUT RISE AND FALL TIMES
1.3 V
1.3 V
1.3 V
10%
10%
90%
90%
3 V
VOH
VOL
0 V
tr
tf
Input
In-Phase
Output
1.3 V
tPLH
tPHL
1.3 V
1.3 V
10%
10%
90%
90%
VOH
VOL
tr
tf
tPHL
tPLH
Out-of-Phase
Output
Test
Point
From Output
Under Test
LOAD CIRCUIT
NOTES: A. CL includes probe and test-fixture capacitance.
B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following
characteristics: PRR
1 MHz, ZO = 50
, tr = 6 ns, tf = 6 ns.
C. The outputs are measured one at a time with one input transition per measurement.
D. tPLH and tPHL are the same as tpd.
CL = 50 pF
(see Note A)
1.3 V
1.3 V
10%
10%
90%
90%
VCC
0 V
tr
tf
Input
Figure 1. Load Circuit and Voltage Waveforms
SN54HCT14, SN74HCT14
HEX SCHMITT-TRIGGER INVERTERS
SCLS225E JULY 1995 REVISED JULY 2003
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
0.25
0.2
0.1
0.05
0
0.45
0.15
0
0.45
0.9 1.35
1.8
2.26
2.7
Supply Current
mA
0.35
0.3
0.4
SUPPLY CURRENT
vs
INPUT VOLTAGE
0.5
3.16 3.61
4
VI Input Voltage V
I CC
VI = 0 to VCC
VI = VCC to 0
VCC = 4.5 V
0.25
0.2
0.1
0.05
0
0.45
0.15
0
0.55
1.1 1.66
2.2
2.76
3.3
Supply Current
mA
0.35
0.3
0.4
SUPPLY CURRENT
vs
INPUT VOLTAGE
0.5
3.86 4.4 4.97
VI Input Voltage V
I CC
VI = 0 to VCC
VI = VCC to 0
VCC = 5.5 V
0
0.75
1.5
2.27
Output V
oltage
V
OUTPUT VOLTAGE
vs
INPUT VOLTAGE
3
3.77
6
5
4
3
2
1
0
1
V
O
VI Input Voltage V
VI = Down
VI = Up
VCC = 4.5 V
0
0.92
1.84
2.76
Output V
oltage
V
OUTPUT VOLTAGE
vs
INPUT VOLTAGE
3.68
4.6
6
5
4
3
2
1
0
1
V
O
VI Input Voltage V
VI = Down
VI = Up
VCC = 5.5 V
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