It operates from a 4.75 V to 5.25 V supply and is rated over 0°C to 70°C.
Maximum propagation delay is 18 ns at 5 V and 150 pF. Output high is 42.4 mA, output low is 48 mA.
SN74128NSR NOR Gate, 4-Ch 2-Input, 14-SOIC, 18ns
MPNSN74128NSR
End of Life
Texas Instruments SN74128NSR, 7400 series, quad 2-input NOR gate, 14-SOIC (0.209", 5.30mm width), surface mount, 4.75V–5.25V supply, 18ns propagation delay @ 5V/150pF, 0°C to 70°C.
$2.95Ref. price · indicative, final on quote
Packaging14-SOIC (0.209", 5.30mm Width)
RoHSROHS3 Compliant
Series7400
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Series | 7400 |
| Logic type | NOR Gate |
| Mounting | Surface Mount |
| Supply voltage | 4.75V ~ 5.25V |
| Current - output high, low | 42.4mA, 48mA |
| I/O channels | 2 |
| Operating temperature | 0°C ~ 70°C |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | 14-SOIC (0.209\", 5.30mm Width) |
| Number of circuits | 4 |
| Input logic level - low | 0.8V |
| Input logic level - high | 2V |
| Max propagation delay @ v, max CL | 18ns @ 5V, 150pF |
Product details
Frequently asked questions
Is SN74128NSR RoHS compliant?
Yes, it is ROHS3 compliant.