j suffix ceramic case 632-08 n suffix plastic case 646-06 d suffix soic case 751a-02 mc54fxxxj ceramic mc74fxxxn plastic mc74fxxxd soic mc54/74f132 quad 2-input nand schmitt trigger fast ? shottky ttl 14 1 14 1 ordering information 14 1 4-51 fast and ls ttl data quad 2-input nand schmitt trigger the mc54/74f132 contains four 2-input nand gates which accept stan - dard ttl input signals and provide standard ttl output levels. they are ca - pable of transforming slowly changing input signals into sharply defined, jit - ter-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 trig - ger uses positive feedback to ef fectively speed up slow input transitions and provide dif ferent input threshold voltages for positive and negative-going tran - sitions. 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. 13 14 12 11 10 9 8 2 1 3 4 5 6 7 gnd v cc a b y a b y a b y a b y guaranteed operating ranges symbol parameter min typ max unit v cc supply voltage 54,74 4.5 5.0 5.5 v t a operating ambient temperature range 54 55 25 125 c 74 0 25 70 i oh output current e high 54,74 1.0 ma i ol output current e low 54,74 20 ma function table h = high voltage level l= low voltage level output inputs a b y l l h h l h l h h h h l
fast and ls ttl data 4-52 mc54/74f132 dc characteristics over operating temperature range (unless otherwise specified) limits symbol parameter min typ max unit test conditions v t + positive-going threshold voltage 1.5 2.0 v v cc = 5.0 v v t negative-going threshold voltage 0.7 1.1 v v cc = 5.0 v v t +v t hysteresis 0.4 0.8 v v cc = 5.0 v v ih input high voltage 2.0 v guaranteed input high voltage v il input low voltage 0.8 v guaranteed input low voltage v ik input clamp diode voltage 1.2 v v cc = min, i in = 18 ma v oh output high voltage 54,74 2.5 v i oh = 1.0 ma v cc = 4.50 v 74 2.7 v i oh = 1.0 ma v cc = 4.75 v v ol output low voltage 0.5 v i ol = 20 ma v cc = min i t + input current at positive-going threshold 0 m a v cc = 5.0 v, v in = v t + i t input current at negative-going threshold 350 m a v cc = 5.0 v, v in = v t i ih input high current 20 m a v cc = max, v in = 2.7 v 0.1 ma v cc = max, v in = 7.0 v i il input low current 0.6 ma v cc = max, v in = 0.5 v i os output short circuit current (note 2) 60 150 ma v cc = max, v out = 0 v i cc total, supply current i cch 8.5 12 ma v in = gnd v cc = max i ccl 13 19.5 v in = 4.5 v notes: 1. for conditions shown as min or max, use the appropriate value specified under recommended operating conditions for the applicable device type. 2. not more than one output should be shorted at a time, nor for more than 1 second. ac electrical characteristics 54/74f 54f 74f t a = +25 c t a = 55 c to +125 c t a = 0 c to +70 c v cc = +5.0 v v cc = 5.0 v 10% v cc = 5.0v 10% c l = 50 pf c l = 50 pf c l = 50 pf symbol parameter min typ max min max min max unit t plh t phl propagation delay a, b to y 3.5 3.0 5.5 5.0 7.0 6.5 3.5 3.0 9.0 8.0 3.5 3.0 8.0 7.0 ns
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