MM74HC123A Fairchild, MM74HC123A Datasheet
MM74HC123A
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MM74HC123A Summary of contents
Page 1
... The MM74HC123A can be triggered on the positive transition of the clear while A is held LOW and B is held HIGH. The MM74HC123A is retriggerable. That is it may be trig- gered repeatedly while their outputs are generating a pulse and the pulse will be extended. ...
Page 2
... Truth Table Inputs Clear HIGH Level L LOW Level Transition from LOW-to-HIGH Transition from HIGH-to-LOW One HIGH Level Pulse One LOW Level Pulse X Irrelevant Logic Diagram www.fairchildsemi.com Outputs ...
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... The worst-case leakage current Min Max Units 1000 ns 500 ns 400 125 C A Units 1.5 1.5 V 3.15 3.15 V 4.2 4.2 V 0.3 0.3 V 0.9 0.9 V 1.2 1.2 V 1.9 1.9 V 4.4 4.4 V 5.9 5 3.84 3.7 V 5.34 5.2 V 0.1 0.1 V 0.1 0.1 V 0.1 0 0.33 0.4 V 0.33 0.4 V 5.0 5.0 A 1.0 1 160 A 110 130 A 1.3 1.6 mA 2.6 3.2 mA www.fairchildsemi.com ...
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... Capacitance (Pins 7 & 15) C Maximum Input IN Capacitance (other inputs) C Power Dissipation (Note 5) PD Capacitance Note 5: C determines the no load dynamic power consumption www.fairchildsemi.com Conditions EXT EXT C 1000 pF EXT EXT Typ 2.0V 77 169 4 ...
Page 5
... Both comparators are “off” with the total device current due only to reverse junction leakages. An added feature of the MM74HC123A is that the output latch is set via the input trigger without regard to the capacitor voltage. Thus, propagation delay from trigger independent of FIGURE 1 ...
Page 6
... Typical Distribution of Output Pulse Width, Part to Part Note: R and C are not subjected to temperature. The C is polypropylene. www.fairchildsemi.com clear input is held low, any trigger inputs that occur will be inhibited and the Q and Q outputs of the output latch will not change. Since the Q output is reset when an input low- ...
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... Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M16A Package Number M16D 7 www.fairchildsemi.com ...
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... Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide www.fairchildsemi.com Package Number MTC16 8 ...
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... Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. Package Number N16E 2 ...