November 1988
Revised December 1999
74AC14 • 74ACT14
Hex Inverter with Schmitt Trigger Input
General Description
The 74AC14 and 74ACT14 contain six inverter gates each with a Schmitt trigger input. They are capable of transforming slowly changing input signals into sharply defined, jitterfree output signals. In addition, they have a greater noise margin than conventional inverters.
The 74AC14 and 74ACT14 have hysteresis between the positive-going and negative-going input thresholds (typically 1.0V) which is determined internally by transistor ratios and is essentially insensitive to temperature and supply voltage variations.
Features
■ICC reduced by 50%
■Outputs source/sink 24 mA
■74ACT14 has TTL-compatible inputs
Ordering Code:
Order Number |
Package Number |
Package Description |
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74AC14SC |
M14A |
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body |
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74AC14SJ |
M14D |
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide |
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74AC14MTC |
MTC14 |
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MS-153, 4.4mm Wide |
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74AC14PC |
N14A |
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide |
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74ACT14SC |
M14A |
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body |
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74ACT14MTC |
MTC14 |
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MS-153, 4.4mm Wide |
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74ACT14PC |
N14A |
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide |
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Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbol
IEEE/IEC
Pin Descriptions
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Pin Names |
Description |
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In |
Inputs |
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Outputs |
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O |
n |
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FACT is a trademark of Fairchild Semiconductor Corporation.
Connection Diagram
Function Table
Input |
Output |
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A |
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O |
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L |
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H |
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H |
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L |
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Input Trigger Schmitt with Inverter Hex 74ACT14 • 74AC14
© 1999 Fairchild Semiconductor Corporation |
DS009917 |
www.fairchildsemi.com |
74AC14 • 74ACT14
Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC) |
− 0.5V to + 7.0V |
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DC Input Diode Current (IIK) |
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VI = |
− 0.5V |
− 20 mA |
VI = |
VCC + 0.5V |
+ 20 mA |
DC Input Voltage (VI) |
− 0.5V to VCC + 0.5V |
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DC Output Diode Current (IOK) |
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VO = |
− 0.5V |
− 20 mA |
VO = |
VCC + 0.5V |
+ 20 mA |
DC Output Voltage (VO) |
− 0.5V to VCC + 0.5V |
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DC Output Source |
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or Sink Current (IO) |
± 50 mA |
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DC VCC or Ground Current |
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per Output Pin (ICC or IGND) |
± 50 mA |
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Storage Temperature (TSTG) |
− 65° C to + 150° C |
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Junction Temperature (TJ) |
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PDIP |
140° C |
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Recommended Operating
Conditions
Supply Voltage (VCC) |
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AC |
2.0V to 6.0V |
ACT |
4.5V to 5.5V |
Input Voltage (VI) |
0V to VCC |
Output Voltage (VO) |
0V to VCC |
Operating Temperature (TA) |
− 40° C to + 85° C |
Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. Fairchild does not recommend operation of FACT circuits outside databook specifications.
DC Electrical Characteristics for AC
Symbol |
Parameter |
VCC |
TA = + 25° C |
TA = − 40° C to + 85° C |
Units |
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Conditions |
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(V) |
Typ |
Guaranteed Limits |
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VOH |
Minimum HIGH Level |
3.0 |
2.99 |
2.9 |
2.9 |
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Output Voltage |
4.5 |
4.49 |
4.4 |
4.4 |
V |
IOUT = |
− 50 µ A |
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5.5 |
5.49 |
5.4 |
5.4 |
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3.0 |
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2.56 |
2.46 |
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IOH = |
12 |
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4.5 |
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3.86 |
3.76 |
V |
IOH = |
24 mA |
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5.5 |
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4.86 |
4.76 |
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IOH = |
24 mA (Note 2) |
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VOL |
Maximum LOW Level |
3.0 |
0.002 |
0.1 |
0.1 |
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Output Voltage |
4.5 |
0.001 |
0.1 |
0.1 |
V |
IOUT = |
50 µ A |
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5.5 |
0.001 |
0.1 |
0.1 |
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3.0 |
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0.36 |
0.44 |
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IOL = |
12 |
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4.5 |
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0.36 |
0.44 |
V |
IOL 24 mA |
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5.5 |
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0.36 |
0.44 |
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IOL = |
24 mA (Note 2) |
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IIN (Note 4) |
Maximum Input Leakage Current |
5.5 |
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± 0.1 |
± 1.0 |
µ A |
VI = |
VCC, GND |
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Vt+ |
Maximum Positive |
3.0 |
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2.2 |
2.2 |
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Threshold |
4.5 |
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3.2 |
3.2 |
V |
TA = |
Worst Case |
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5.5 |
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3.9 |
3.9 |
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Vt− |
Minimum Negative |
3.0 |
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0.5 |
0.5 |
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Threshold |
4.5 |
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0.9 |
0.9 |
V |
TA = |
Worst Case |
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5.5 |
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1.1 |
1.1 |
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VH(MAX) |
Maximum Hysteresis |
3.0 |
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1.2 |
1.2 |
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4.5 |
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1.4 |
1.4 |
V |
TA = |
Worst Case |
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5.5 |
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1.6 |
1.6 |
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VH(MIN) |
Minimum Hysteresis |
3.0 |
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0.3 |
0.3 |
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4.5 |
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0.4 |
0.4 |
V |
TA = |
Worst Case |
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5.5 |
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0.5 |
0.5 |
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IOLD |
Minimum Dynamic |
5.5 |
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75 |
mA |
VOLD = |
1.65V Max |
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IOHD |
Output Current (Note 3) |
5.5 |
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− 75 |
mA |
VOHD = |
3.85V Min |
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ICC |
Maximum Quiescent |
5.5 |
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2.0 |
20.0 |
µ A |
VIN = |
VCC |
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(Note 4) |
Supply Current |
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or GND |
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Note 2: All outputs loaded; thresholds on input associated with output under test.
Note 3: Maximum test duration 2.0 ms, one output loaded at a time.
Note 4: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC.
www.fairchildsemi.com |
2 |
AC Electrical Characteristics for AC
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VCC |
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TA = + 25° C |
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TA = − 40° C to + 85° C |
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Symbol |
Parameter |
(V) |
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CL = 50 pF |
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CL = |
50 pF |
Units |
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(Note 5) |
Min |
Typ |
Max |
Min |
Max |
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tPLH |
Propagation Delay |
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3.3 |
1.5 |
9.5 |
13.5 |
1.5 |
15.0 |
ns |
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5.0 |
1.5 |
7.0 |
10.0 |
1.5 |
11.0 |
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tPHL |
Propagation Delay |
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3.3 |
1.5 |
7.5 |
11.5 |
1.5 |
13.0 |
ns |
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5.0 |
1.5 |
6.0 |
8.5 |
1.5 |
9.5 |
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Note 5: Voltage Range 3.3 is 3.3V ± |
0.3V |
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Voltage Range 5.0 is 5.0V ± |
0.5V |
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DC Electrical Characteristics for ACT
Symbol |
Parameter |
VCC |
TA = + 25° C |
TA = − 40° C to + 85° C |
Units |
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Conditions |
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(V) |
Typ |
Guaranteed Limits |
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VIH |
Minimum HIGH Level |
4.5 |
1.5 |
2.0 |
2.0 |
V |
VOUT = |
0.1V |
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Input Voltage |
5.5 |
1.5 |
2.0 |
2.0 |
or VCC − |
0.1V |
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VIL |
Maximum LOW Level |
4.5 |
1.5 |
0.8 |
0.8 |
V |
VOUT = |
0.1V |
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Output Voltage |
5.5 |
1.5 |
0.8 |
0.8 |
or VCC − |
0.1V |
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VOH |
Minimum HIGH Level |
4.5 |
4.49 |
434 |
4.4 |
V |
IOUT = |
− |
50µ A |
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Output Voltage |
5.5 |
5.49 |
5.4 |
5.4 |
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VIN = |
VIL or VIH |
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4.5 |
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3.86 |
3.76 |
V |
IOH = |
− |
24 mA |
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5.5 |
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4.86 |
4.76 |
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IOH = |
− 24 mA (Note 6) |
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VOL |
Maximum LOW Level |
4.5 |
0.001 |
0.1 |
0.1 |
V |
IOUT = |
50 µ A |
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Output Voltage |
5.5 |
0.001 |
0.1 |
0.1 |
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VIN = |
VIL or VIH |
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4.5 |
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0.36 |
0.44 |
V |
IOL = |
24 mA |
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5.5 |
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0.36 |
0.44 |
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IOL = |
24 mA (Note 6) |
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IIN |
Maximum Input Leakage Current |
5.5 |
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± 0.1 |
± 1.0 |
µ A |
VI = |
VCC, GND |
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VH(MAX) |
Maximum Hysteresis |
4.5 |
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1.4 |
1.4 |
V |
TA = |
Worst Case |
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5.5 |
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1.6 |
1.6 |
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VH(MIN) |
Minimum Hysteresis |
4.5 |
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0.4 |
0.4 |
V |
TA = |
Worst Case |
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5.5 |
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0.5 |
0.5 |
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Vt+ |
Maximum Positive |
4.5 |
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2.0 |
2.0 |
V |
TA = |
Worst Case |
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Threshold |
5.5 |
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2.0 |
2.0 |
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Vt− |
Minimum Negative |
4.5 |
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0.8 |
0.8 |
V |
TA = |
Worst Case |
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Threshold |
5.5 |
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0.8 |
0.8 |
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ICCT |
Maximum ICC/Input |
5.5 |
0.6 |
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1.5 |
mA |
VI = |
VCC − 2.1V |
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IOLD |
Minimum Dynamic |
5.5 |
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75 |
mA |
VOLD = |
1.65V Max |
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IOHD |
Output Current (Note 7) |
5.5 |
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− 75 |
mA |
VOHD = |
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3.85V Min |
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ICC |
Maximum Quiescent |
5.5 |
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2.0 |
20.0 |
µ A |
VIN = |
VCC |
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Supply Current |
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or GND |
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Note 6: All outputs loaded; thresholds on input associated with output under test.
Note 7: Maximum test duration 2.0 ms, one output loaded at a time.
74ACT14 • 74AC14
3 |
www.fairchildsemi.com |
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