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Logic selection guide 2016

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MULTIVIBRATORS<br />

Features and benefits<br />

4 Simple control interface<br />

4 Power-on reset<br />

4 Dual devices with separate reset inputs<br />

4 Negative or positive edge triggered<br />

4 Low-power CMOS<br />

Applications<br />

4 Timing delays in synchronous control circuits<br />

Multivibrators<br />

Type number Description V CC<br />

(V)<br />

<strong>Logic</strong><br />

switching<br />

levels<br />

Output<br />

drive<br />

capability<br />

(mA)<br />

t pd<br />

(ns)<br />

Output<br />

Load<br />

C L (Typ)<br />

T amb<br />

(°C)<br />

74AHC123 Dual retriggerable monostable multivibrator with reset 2.0 to 5.5 CMOS ±8 5.1 50 pF -40 to +125<br />

74AHCT123<br />

Dual retriggerable monostable multivibrator with reset;<br />

TTL-enabled<br />

4.5 to 5.5 TTL ±8 5 50 pF -40 to +125<br />

74HC123 Dual retriggerable monostable multivibrator with reset 2.0 to 6.0 CMOS ±7.8 9 50 pF -40 to +125<br />

74HCT123<br />

Dual retriggerable monostable multivibrator with reset;<br />

TTL-enabled<br />

4.5 to 5.5 TTL ±4 26 50 pF -40 to +125<br />

74HC221 dual non-retriggerable monostable multivibrator with reset 2.0 to 6.0 CMOS ±5.2 29 50 pF -40 to +125<br />

74HCT221<br />

dual non-retriggerable monostable multivibrator with reset;<br />

TTL-enabled<br />

4.5 to 5.5 TTL ±4 32 50 pF -40 to +125<br />

74HC423 Dual retriggerable monostable multivibrator with reset 2.0 to 6.0 CMOS ±5.2 23 50 pF -40 to +125<br />

74HCT423<br />

Dual retriggerable monostable multivibrator with reset;<br />

TTL-enabled<br />

4.5 to 5.5 TTL ±4 26 50 pF -40 to +125<br />

74HC4538 Dual retriggerable precision monostable multivibrator 2.0 to 6.0 CMOS ±5.2 27 50 pF -40 to +125<br />

74HCT4538<br />

Dual retriggerable precision monostable multivibrator;<br />

TTL-enabled<br />

4.5 to 5.5 TTL ±4 30 50 pF -40 to +125<br />

74LV123 Dual retriggerable monostable multivibrator with reset 1.0 to 5.5 TTL ±12 20 50 pF -40 to +125<br />

74LVC1G123 Single retriggerable monostable multivibrator 1.65 to 5.5<br />

CMOS/<br />

LVTTL<br />

±32 3.5 50 pF -40 to +125<br />

HEF4047 Monostable/astable multivibrator 4.5 to 15.5 CMOS ±2.4 50 50 pF -40 to +85<br />

HEF4528 Dual retriggerable monostable multivibrator with reset 4.5 to 15.5 CMOS ±2.4 40 50 pF -40 to +85<br />

Note: Selected package types only. Complete package listings are in the previous section and online at www.nxp.com/logic.<br />

98 NXP <strong>Logic</strong> <strong>selection</strong> <strong>guide</strong> <strong>2016</strong>

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