74HC00D
Toshiba Semiconductor and Storage
MOQ 1 · Tape & Reel (TR); Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T
Technical specifications
| Parameter / Attribute | Specification / Value |
|---|---|
| Series | 74HC |
| Logic type | NAND Gate |
| Mounting | Surface Mount |
| Supply voltage | 2V ~ 6V |
| Current - quiescent | 1 µA |
| Current - output high, low | 5.2mA, 5.2mA |
| I/O channels | 2 |
| Operating temperature | -40°C~125°C |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | 14-SOIC (0.154\", 3.90mm Width) |
| Number of circuits | 4 |
| Input logic level - low | 0.5V ~ 1.8V |
| Input logic level - high | 1.5V ~ 4.2V |
| Max propagation delay @ v, max CL | 13ns @ 6V, 50pF |
Need Stock or a Drop-in Second-Source for 74HC00D?
Package: DIP-14 / SOIC-14 / TSSOP-14 · Pin-compatible replacements with immediate Shenzhen spot stock
The CD4011B is the quad 2-input NAND of the 4000B CMOS generation - the logic of old industrial timers, alarm panels, appliance controls and instrument interlocks that are still in service and still repaired. Inside the 4000B family the pinout is a JEDEC standard, so every manufacturer copy swaps pin-for-pin. Outside the family it is a trap zone: the 74HC00 quad NAND looks like the same function in the same 14-pin body, and it is wired differently, runs on a narrower supply, and drives ten times the current.
Verified Pin-Compatible Replacements (4 verified alternatives)
Pin-for-Pin by JEDEC Standard
Shenzhen Spot Stock (24-48h Dispatch)
The Nexperia 4000B quad NAND: 3V to 15V supply, symmetric output drive, same function table and same folded gate arrangement (gate outputs on pins 3, 4, 10 and 11).
3V to 15V; quiescent current nanoamp class; inputs protected to the rails.
The Classical Second Source
Shenzhen Spot Stock (24-48h Dispatch)
The Motorola-line 4000B NAND - the part many of these boards were originally built around. Same pinout, same 3V to 15V window.
3V to 15V, standard 4000B drive (about 0.5mA at 5V rising to 3.4mA at 15V).
Same Socket, Schmitt Inputs
Shenzhen Spot Stock (24-48h Dispatch)
Same quad 2-input NAND function in the same 4000B pin arrangement, with Schmitt-trigger inputs: each input has defined hysteresis thresholds instead of a single transition point.
3V to 15V, same drive class as the 4011B.
Faster and Stronger - But a Different Wiring
Shenzhen Spot Stock (24-48h Dispatch)
The high-speed CMOS quad NAND: 2V to 6V supply, roughly 15ns propagation against 60-90ns for the 4000B part, and about +/-4mA output drive at 4.5V against 0.5mA for the 4011B at 5V.
2V to 6V only - it will not survive the 12V or 15V rails that legacy 4000B boards routinely run.
Buyer & Quality Checklist for Sourcing Alternatives
- Within the 4000B series the pinout is a JEDEC standard - CD4011B, HEF4011B, MC14011B and TC4011BP swap pin-for-pin. Across families (74HC00, 74LS00) nothing but the supply pins stays put.
- The 4011B drive is small and symmetric: about 0.5mA at 5V, 1.3mA at 10V, 3.4mA at 15V. It drives CMOS inputs happily and LEDs or relays only through a transistor - do not expect HC-class drive.
- Keep the suffix honest: B parts are buffered, UB parts are unbuffered; they differ in output curves and are not interchangeable in analog-adjacent positions.
- The 4093 (Schmitt NAND) shares the pinout and improves slow-edge and debounce circuits, but changes oscillator timing. Identify the role of each gate before making the swap a policy.
- Legacy boards often run the logic at 12V or 15V; check the rail before proposing any 74HC-family modernization - HC parts end at 6V.
- For repairs, unmarked or re-marked 4011 stock is common; the part is cheap enough that verified lots from documented fabs are the sensible default.
Frequently Asked Technical Questions
Q: Can I replace a CD4011 with a 74HC00?
A: No - same function and package, different wiring. Only VDD (14) and VSS (7) share positions; the gate inputs and outputs are rearranged (pin 4 is an output on the 4011 and an input on the 74HC00), and the HC part only tolerates 6V. It is a redesign part, not a substitution.
Q: Is CD4093 a drop-in replacement for CD4011?
A: Pin-for-pin yes, behavior-for-behavior only sometimes: the 4093 adds Schmitt hysteresis. Great for switch debounce and slow edges; it shifts frequency in oscillators tuned around the plain 4011 thresholds.
Q: Why does the CD4011B only source half a milliamp at 5V?
A: That is the 4000B design point: micropower logic meant to run from 3V to 15V with nanoamp quiescent current. Drive grows with supply (about 3.4mA at 15V). Loads beyond that go through a transistor, as the original designer intended.