Logic selection guide 2016
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DIGITAL COMPARATORS<br />
Features and benefits<br />
4 Magnitude comparison of any binary words<br />
4 Serial or parallel expansion without extra gating<br />
4 Low-power CMOS<br />
4 CMOS or TTL inputs<br />
Applications<br />
4 Process controllers<br />
4 Servo-motor control<br />
Digital comparators<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 />
Number<br />
of bits<br />
T amb<br />
(°C)<br />
74HC688 8-bit magnitude comparator 2.0 to 6.0 CMOS ±5.2 17 50 pF 8 -40 to +125<br />
74HCT688 8-bit magnitude comparator; TTL-enabled 4.5 to 5.5 TTL ±4.0 17 50 pF 8 -40 to +125<br />
74HC85 4-bit magnitude comparator 2.0 to 6.0 CMOS ±5.2 23 50 pF 4 -40 to +125<br />
74HCT85 4-bit magnitude comparator; TTL-enabled 4.5 to 5.5 TTL ±4.0 26 50 pF 4 -40 to +125<br />
HEF4585 4-bit magnitude comparator 4.5 to 15.5 CMOS ±2.4 65 50 pF 4 -40 to +85<br />
DIGITAL MULTIPLEXERS<br />
Features and benefits<br />
4 Mixed 3.3/5 V applications<br />
4 Bus-width reduction<br />
4 High noise immunity<br />
4 Low power consumption<br />
4 Wide range of supply voltages<br />
4 Low propagation delay<br />
4 Optional overvoltage-tolerant inputs, complementary<br />
outputs<br />
Applications<br />
4 Power windows, power locks, power mirror control<br />
4 Advanced diagnostics and engine control modules<br />
4 Industrial control systems<br />
4 Decision-making via voltage sensing in portable<br />
electronics<br />
4 I/O expansion<br />
Digital multiplexers (cont.)<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 />
Output<br />
Load CL<br />
(Typ)<br />
t pd<br />
(ns)<br />
T amb<br />
(°C)<br />
74AHC157 Quad 2-input multiplexer 2.0 to 5.5 CMOS ±8 50 pF 3.2<br />
74AHCT157 Quad 2-input multiplexer; TTL-enabled 4.5 to 5.5 TTL ±8 50 pF 3.2 -40 to +125<br />
74AHC257 Quad 2-input multiplexer (3-state) 2.0 to 5.5 CMOS ±8 50 pF 2.9 -40 to +125<br />
74AHCT257 Quad 2-input multiplexer; TTL-enabled (3-state) 4.5 to 5.5 TTL ±8 50 pF 3.7 -40 to +125<br />
74AUP1G157 Single 2-input multiplexer 1.1 to 3.6 CMOS 1.9/-1.9 30 pF 3.2 -40 to +125<br />
74AUP1G158 Single 2-input multiplexer; inverting 1.1 to 3.6 CMOS 1.9/-1.9 30 pF 3.2 -40 to +125<br />
74AUP2G157 Single 2-input multiplexer 1.1 to 3.6 CMOS 1.9/-1.9 30 pF 3.4 -40 to +125<br />
74HC151 8-input multiplexer 2.0 to 6.0 CMOS ±5.2 50 pF 17 -40 to +125<br />
Note: Selected package types only. Complete package listings are in the previous section and online at www.nxp.com/logic.<br />
80 NXP <strong>Logic</strong> <strong>selection</strong> <strong>guide</strong> <strong>2016</strong>
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