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74F14

Motorola Inc
Part Number 74F14
Manufacturer Motorola Inc
Description SCHMITT TRIGGERS DUAL 4-INPUT NAND/HEX INVERTERS
Published Apr 3, 2005
Detailed Description SCHMITT TRIGGERS DUAL 4-INPUT NAND/HEX INVERTERS The MC54/74F13 and MC54/74F14 contain logic gates/inverters which accep...
Datasheet PDF File 74F14 PDF File

74F14
74F14

Overview
SCHMITT TRIGGERS DUAL 4-INPUT NAND/HEX INVERTERS The MC54/74F13 and MC54/74F14 contain logic gates/inverters which accept standard TTL input signals and provide standard TTL output levels.
They are capable of transforming slowly changing input signals into sharply defined, jitter-free output signals.
Additionally, they have greater noise margin than conventional inverters.
Each circuit contains a Schmitt trigger followed by a Darlington level shifter and a phase splitter driving a TTL totem pole output.
The Schmitt trigger uses positive feedback to effectively speed up slow input transitions and provide different input threshold voltages for positive and negative-going transitions.
This hysteresis between the positive-going and negative-going input thresholds (typically 800 mV) is determined internally by resistor ratios and is essentially insensitive to temperature and supply voltage variations.
LOGIC AND CONNECTION DIAGRAMS 14 MC54/74F13 MC54/74F14 SCHMITT TRIGGERS DUAL 4-INPUT NAND/HEX INVERTERS FAST™ SCHOTTKY TTL J SUFFIX CERAMIC CASE 632-08 1 MC54/74F13 VCC 14 D 13 C 12 N/C 11 B 10 A 9 O 8 14 1 N SUFFIX PLASTIC CASE 646-06 1 A 2 B 3 N/C 4 C 5 D 6 O 7 GND 14 1 D SUFFIX SOIC CASE 751A-02 MC54/74F14 VCC 14 A 13 O 12 A 11 O 10 A 9 O 8 ORDERING INFORMATION MC54FXXJ MC74FXXN MC74FXXD Ceramic Plastic SOIC 1 A 2 O 3 A 4 O 5 A 6 O 7 GND GUARANTEED OPERATING RANGES Symbol VCC TA Supply Voltage Operating Ambient Temperature Range Parameter 54, 74 54 74 IOH IOL Output Current — High Output Current — Low 54, 74 54, 74 Min 4.
5 –55 0 Typ 5.
0 25 25 Max 5.
5 125 70 –1.
0 20 mA mA Unit V °C FAST AND LS TTL DATA 4-14 MC54/74F13 • MC54/74F14 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VT+ VT– VT+–VT– VIH VIL VIK VOH Parameter Positive-Going Threshold Voltage Negative-Going Threshold Voltage Hysteresis Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 54, 74 74 VOL IT+ IT– II...


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