The ’279 offers 4 basic S-R flip-flop latches in one 16-pin, 300-mil package. Under conventional operation, the S-R inputs are normally held high. When the S input is pulsed low, the Q output will be set high. When R is pulsed low, the Q output will be reset low. Normally, the S-R inputs should not be taken low simultaneously. The Q output will be unpredictable in this condition.
| Function | RS latch |
| Number of channels | 4 |
| Technology family | LS |
| Supply voltage (min) (V) | 4.75 |
| Supply voltage (max) (V) | 5.25 |
| Input type | Bipolar |
| Output type | Push-Pull |
| Data rate (max) (Mbps) | 70 |
| IOL (max) (mA) | 8 |
| IOH (max) (mA) | -0.4 |
| Features | Very high speed (tpd 5-10ns) |
| Operating temperature range (°C) | 0 to 70 |
| Rating | Catalog |
| PDIP (N) | 16 | 181.42 mm² 19.3 x 9.4 |
| SOIC (D) | 16 | 59.4 mm² 9.9 x 6 |
| SOP (NS) | 16 | 79.56 mm² 10.2 x 7.8 |
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