MC54/74F132 QUAD 2-INPUT NAND SCHMITT TRIGGER
The MC54/74F132 contains four 2-input NAND gates which accept standard TTL...
MC54/74F132 QUAD 2-INPUT NAND SCHMITT TRIGGER
The MC54/74F132 contains four 2-input NAND gates 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. In addition, they have greater noise margin than conventional NAND gates. Each circuit contains a 2-input 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 threshold (typically 800 mV) is determined by resistor ratios and is essentially insensitive to temperature and supply
voltage variations.
QUAD 2-INPUT NAND SCHMITT TRIGGER
FAST™ SHOTTKY TTL
J SUFFIX CERAMIC CASE 632-08
14 1
VCC 14
A 13
B 12
Y 11
A 10
B 9
Y 8
14 1
N SUFFIX PLASTIC CASE 646-06
14
1 A
2 B
3 Y
4 A
5 B
6 Y
7 GND
1
D SUFFIX SOIC CASE 751A-02
ORDERING INFORMATION
MC54FXXXJ MC74FXXXN MC74FXXXD Ceramic Plastic SOIC
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
FUNCTION TABLE
Inputs A B L L H L L H H H H = HIGH ...
