| Type number |
Propagation delay (ns) |
Voltage |
Number of pins |
Logic switching levels |
Output drive capability |
Package version |
| 74AHC157D | 3.2@5V | 2.0-5.5 V | 16 | CMOS | +/- 8 mA | SOT109-1 |
| 74AHC157PW | 3.2@5V | 2.0-5.5 V | 16 | CMOS | +/- 8 mA | SOT403-1 |
| 74AHCT157D | 3.4 | 4.5-5.5 V | 16 | TTL | +/- 8 mA | SOT109-1 |
| 74AHCT157PW | 3.4 | 4.5-5.5 V | 16 | TTL | +/- 8 mA | SOT403-1 |
| 74AHC257D | 2.9@5V | 2.0-5.5 V | 16 | CMOS | +/- 8 mA | SOT109-1 |
| 74AHC257PW | 2.9@5V | 2.0-5.5 V | 16 | CMOS | +/- 8 mA | SOT403-1 |
| 74AHCT257D | 3.7 | 4.5-5.5 V | 16 | TTL | +/- 8 mA | SOT109-1 |
| 74AHCT257PW | 3.7 | 4.5-5.5 V | 16 | TTL | +/- 8 mA | SOT403-1 |
| 74AUP1G157GF | 7.6 | 1.1-3.6 V | 6 | CMOS | 1.9/-1.9 mA | SOT891 |
| 74AUP1G157GM | 7.6 | 1.1-3.6 V | 6 | CMOS | 1.9/-1.9 mA | SOT886 |
| 74AUP1G158GM | 7.7 | 1.1-3.6 V | 6 | CMOS | 1.9/-1.9 mA | SOT886 |
| 74AUP2G157GS | SOT1203 | |||||
| 74AUP2G157GT | 8.7 | 1.1-3.6 V | 8 | CMOS | 1.9/-1.9 mA | SOT833-1 |
| N74F153D | 7 | 4.5-5.5 V | 16 | TTL | -1/+20 mA | SOT109-1 |
| N74F153N | 7 | 4.5-5.5 V | 16 | TTL | -1/+20 mA | SOT38-4 |
| N74F253D | 5 | 4.5-5.5 V | 16 | TTL | -3/+24 mA | SOT109-1 |
| I74F257AD | 4.5 | 4.5-5.5 V | 16 | TTL | -3/+24 mA | SOT109-1 |
| I74F257AN | 4.5 | 4.5-5.5 V | 16 | TTL | -3/+24 mA | SOT38-4 |
| N74F257AD | 4.5 | 4.5-5.5 V | 16 | TTL | -3/+24 mA | SOT109-1 |
| N74F257AN | 4.5 | 4.5-5.5 V | 16 | TTL | -3/+24 mA | SOT38-4 |
| N74F258AD | 4.5 | 4.5-5.5 V | 16 | TTL | -3/+24 mA | SOT109-1 |
| N74F258AN | 4.5 | 4.5-5.5 V | 16 | TTL | -3/+24 mA | SOT38-4 |
| N74F298D | 6.5 | 4.5-5.5 V | 16 | TTL | -1/+20 mA | SOT109-1 |
| N74F298N | 6.5 | 4.5-5.5 V | 16 | TTL | -1/+20 mA | SOT38-4 |
| 74HC151D | 17@5V | 2.0-6.0 V | 16 | CMOS | +/- 5.2 mA | SOT109-1 |
| 74HC151DB | 17@5V | 2.0-6.0 V | 16 | CMOS | +/- 5.2 mA | SOT338-1 |
| 74HC151N | 17@5V | 2.0-6.0 V | 16 | CMOS | +/- 5.2 mA | SOT38-4 |
| 74HC151PW | 17@5V | 2.0-6.0 V | 16 | CMOS | +/- 5.2 mA | SOT403-1 |
| 74HCT151D | 19 | 4.5-5.5V | 16 | TTL | +/- 4 mA | SOT109-1 |
| 74HCT151PW | 19 | 4.5-5.5V | 16 | TTL | +/- 4 mA | SOT403-1 |
| 74HC153D | 14@5V | 2.0-6.0 V | 16 | CMOS | +/- 5.2 mA | SOT109-1 |
| 74HC153PW | 14@5V | 2.0-6.0 V | 16 | CMOS | +/- 5.2 mA | SOT403-1 |
| 74HCT153D | 16 | 4.5-5.5V | 16 | TTL | +/- 4 mA | SOT109-1 |
| 74HCT153N | 16 | 4.5-5.5V | 16 | TTL | +/- 4 mA | SOT38-4 |
| 74HCT153PW | 16 | 4.5-5.5V | 16 | TTL | +/- 4 mA | SOT403-1 |
| 74HC157D | 11@5V | 2.0-6.0 V | 16 | CMOS | +/- 5.2 mA | SOT109-1 |
| 74HC157PW | 11@5V | 2.0-6.0 V | 16 | CMOS | +/- 5.2 mA | SOT403-1 |
| 74HCT157D | 13 | 4.5-5.5V | 16 | TTL | +/- 4 mA | SOT109-1 |
| 74HCT157PW | 13 | 4.5-5.5V | 16 | TTL | +/- 4 mA | SOT403-1 |
| 74HC251D | 15@5V | 2.0-6.0 V | 16 | CMOS | +/- 5.2 mA | SOT109-1 |
| 74HC251DB | 15@5V | 2.0-6.0 V | 16 | CMOS | +/- 5.2 mA | SOT338-1 |
| 74HC251PW | 15@5V | 2.0-6.0 V | 16 | CMOS | +/- 5.2 mA | SOT403-1 |
| 74HCT251D | 19 | 4.5-5.5V | 16 | TTL | +/- 4 mA | SOT109-1 |
| 74HCT251N | 19 | 4.5-5.5V | 16 | TTL | +/- 4 mA | SOT38-4 |
| 74HCT251PW | 19 | 4.5-5.5V | 16 | TTL | +/- 4 mA | SOT403-1 |
| 74HC253D | 17@5V | 2.0-6.0 V | 16 | CMOS | +/- 7.8 mA | SOT109-1 |
| 74HC253DB | 17@5V | 2.0-6.0 V | 16 | CMOS | +/- 7.8 mA | SOT338-1 |
| 74HCT253D | 17 | 4.5-5.5V | 16 | TTL | +/- 6 mA | SOT109-1 |
| 74HCT253N | 17 | 4.5-5.5V | 16 | TTL | +/- 6 mA | SOT38-4 |
| 74HC257D | 11@5V | 2.0-6.0 V | 16 | CMOS | +/- 7.8 mA | SOT109-1 |
| 74HC257N | 11@5V | 2.0-6.0 V | 16 | CMOS | +/- 7.8 mA | SOT38-4 |
| 74HC257PW | 11@5V | 2.0-6.0 V | 16 | CMOS | +/- 7.8 mA | SOT403-1 |
| 74HCT257D | 13 | 4.5-5.5V | 16 | TTL | +/- 6 mA | SOT109-1 |
| 74HCT257N | 13 | 4.5-5.5V | 16 | TTL | +/- 6 mA | SOT38-4 |
| 74HCT257PW | 13 | 4.5-5.5V | 16 | TTL | +/- 6 mA | SOT403-1 |
| 74HC158D | 12@5V | 2.0-6.0 V | CMOS | +/- 5.2 mA | SOT109-1 | |
| 74LV153D | 14@3.3V | 1.0-3.6 V | 16 | TTL | +/- 6 mA | SOT109-1 |
| 74LV153DB | 14@3.3V | 1.0-3.6 V | 16 | TTL | +/- 6 mA | SOT338-1 |
| 74LV153PW | 14@3.3V | 1.0-3.6 V | 16 | TTL | +/- 6 mA | SOT403-1 |
| 74LV251D | 14@3.3V | 1.0-3.6 V | 16 | TTL | +/- 6 mA | SOT109-1 |
| 74LV251N | 14@3.3V | 1.0-3.6 V | 16 | TTL | +/- 6 mA | SOT38-4 |
| 74LV251PW | 14@3.3V | 1.0-3.6 V | 16 | TTL | +/- 6 mA | SOT403-1 |
| 74LVC157AD | 2.6 @ 3.3V | 1.2-3.6 | 16 | TTL | +/- 24 mA | SOT109-1 |
| 74LVC157APW | 2.6 @ 3.3V | 1.2-3.6 | 16 | TTL | +/- 24 mA | SOT403-1 |
| 74LVC1G157GW | SOT363 | |||||
| 74LVC257ABQ | 3.9@3.3V | 1.2-3.6 | TTL | +/- 24 mA | SOT763-1 | |
| 74LVC257AD | 3.9@3.3V | 1.2-3.6 | TTL | +/- 24 mA | SOT109-1 | |
| 74LVC257ADB | 3.9@3.3V | 1.2-3.6 | TTL | +/- 24 mA | SOT338-1 | |
| 74LVC257APW | 3.9@3.3V | 1.2-3.6 | TTL | +/- 24 mA | SOT403-1 |
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