March 1986
Revised February 2000
DM74ALS14
Hex Inverter with Schmitt Trigger Inputs
General Description
This device contains six independent gates, each of which performs the logic INVERT function. Each input has hysteresis which increases the noise immunity and transforms a slowly changing input signal to a fast changing, jitter-free output.
Features
■Input hysteresis
■Low output noise generation
■High input noise immunity
■Switching specification at 50 pF
■Switching specifications guaranteed over full temperature and VCC range
■Advanced oxide-isolated, ion-implanted Schottky TTL process
■Functionally and pin-for-pin compatible with Schottky and low power Schottky TTL counterparts
■Improved AC performance over low power Schottky counterpart
Ordering Code:
Order Number |
Package Number |
Package Description |
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DM74ALS14M |
M14A |
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow |
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DM74ALS14SJ |
M14D |
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide |
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DM74ALS14N |
N14A |
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide |
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Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram |
Function Table |
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Y = |
A |
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Input |
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Output |
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A |
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Y |
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L |
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H |
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H |
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L |
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H = HIGH Logic Level |
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L = LOW Logic Level |
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Inputs Trigger Schmitt with Inverter Hex DM74ALS14
© 2000 Fairchild Semiconductor Corporation |
DS008773 |
www.fairchildsemi.com |
DM74ALS14
Absolute Maximum Ratings(Note 1)
Supply Voltage |
7V |
Input Voltage |
7V |
Storage Temperature Range |
−65°C to +150°C |
Operating Free Air Temperature Range |
0°C to +70°C |
Typical θJA |
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N Package |
78.5°C/W |
M Package |
109.0°C/W |
Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation.
Recommended Operating Conditions
Symbol |
Parameter |
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Min |
Nom |
Max |
Units |
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VCC |
Supply Voltage |
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4.5 |
5 |
5.5 |
V |
VT+ |
Positive-Going Input |
VCC = Min to Max |
1.4 |
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2 |
V |
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Threshold Voltage |
VCC = 5V |
1.55 |
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1.85 |
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VT− |
Negative-Going Input |
VCC = Min to Max |
0.75 |
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1.2 |
V |
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Threshold Voltage |
VCC = 5V |
0.85 |
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1.1 |
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HYS |
Input Hysteresis |
VCC = Min to Max |
0.5 |
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V |
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VCC = 5V |
0.6 |
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IOH |
HIGH Level Output Current |
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−0.4 |
mA |
IOL |
LOW Level Output Current |
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8 |
mA |
TA |
Operating Free Air Temperature Range |
0 |
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70 |
°C |
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Electrical Characteristics
over recommended free air temperature range (unless otherwise noted)
Symbol |
Parameter |
Test Conditions |
Min |
Typ |
Max |
Units |
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VIK |
Input Clamp Voltage |
VCC = Min, II = −18 mA |
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−1.5 |
V |
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VOH |
HIGH Level Output Voltage |
VCC = 4.5V to 5.5V, IOH = Max |
VCC − 2 |
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V |
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VOL |
LOW Level Output Voltage |
VCC = Min |
IOL = 4 mA |
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0.25 |
0.4 |
V |
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IOL = 8 mA |
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0.35 |
0.5 |
V |
IT+ |
Input Current at Positive-Going Threshold Voltage |
VCC = 5V, VI = |
VT+ |
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20 |
μA |
IT− |
Input Current at Negative-Going Threshold Voltage |
VCC = 5V, VI = VT− |
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−100 |
μA |
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II |
Input Current at Maximum Input Voltage |
VCC = Max, VI = 7V |
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100 |
μA |
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IIH |
HIGH Level Input Current |
VCC = Max, VI = 2.7V |
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20 |
μA |
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IIL |
LOW Level Input Current |
VCC = Max, VI = 0.4V |
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−100 |
μA |
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IO |
Output Drive Current |
VCC = Max, VO = 2.25V |
−30 |
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−112 |
mA |
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ICCH |
Supply Current with Outputs HIGH |
VCC = Max |
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12 |
mA |
ICCL |
Supply Current with Outputs LOW |
VCC = Max |
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12 |
mA |
VOLP |
Quiet Output Maximum |
VCC = 5.0V, TA = 25°C |
0.16 |
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V |
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Dynamic VOL |
(Figures 1, 2); (Note 2)(Note 3) |
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VOLV |
Quiet Output Minimum |
VCC = 5.0V, TA = 25°C |
−0.27 |
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V |
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Dynamic VOL |
(Figures 1, 2); (Note 2)(Note 3) |
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VIHD |
Minimum HIGH Level |
VCC = 5.0V, TA = 25°C |
1.44 |
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V |
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Dynamic Input Voltage |
(Note 2)(Note 4) |
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VILD |
Maximum LOW Level |
VCC = 5.0V, TA = 25°C |
1.15 |
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V |
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Dynamic Input Voltage |
(Note 2)(Note 4) |
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Note 2: Plastic DIP package.
Note 3: n = number of device outputs, n − 1 outputs switching, each driven 0V to 3V one output @ GND.
Note 4: n = number of device outputs, n outputs switching, n − 1 inputs switching 0V to 3V. Input under test switching 3V to threshold (VILD); 0V to threshold (VIHD); f = 1 MHz.
www.fairchildsemi.com |
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