Texas Instruments 4000B series CMOS quad NAND R/S latch, order code CD4044BDW, tri-state outputs, 3V to 18V supply, 50ns propagation delay, 16-SOIC package, -55°C to 125°C operating temperature.
| Parameter | Value |
|---|---|
| Series | 4000B |
| Logic type | S-R Latch |
| Output type | Tri-State |
| Mounting | Surface Mount |
| Supply voltage | 3V ~ 18V |
| Current - output high, low | 6.8mA, 6.8mA |
| Operating temperature | -55°C ~ 125°C |
| Circuit | 1:1 |
| Package | Tube |
| Case | 16-SOIC (0.295\", 7.50mm Width) |
| Independent circuits | 4 |
| Delay time - propagation | 50ns |
Supply range is 3V to 18V. Operating temperature is -55°C to 125°C.
There is no last-time-buy notice, no NRND flag, and no official successor — the 4000B series continues in production for legacy and new designs that need the wide voltage range and military temperature rating.
The CD4044BDW is a quad NAND R/S latch with tri-state outputs. Each of the four independent latches can set or reset a stored bit, and the tri-state output allows multiple latches to share a common data bus.
There is no direct pin-compatible second source listed. The 74FCT573APC is a D-type transparent latch with a different logic function (8-bit transparent, not S-R) and a narrower supply range (4.75V). It is not a functional replacement for the CD4044BDW.