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Conversely, the 4000-series has "borrowed" from the 7400 series – such as the CD40193 and CD40161 being pin-for-pin functional replacements for 74C193 and 74C161. Older TTL parts made by manufacturers such as Signetics , Motorola , Mullard and Siemens may have different numeric prefix and numbering series entirely, such as in the European FJ ...
The first part number in the series, the 7400, is a 14-pin IC containing four two-input NAND gates. Each gate uses two input pins and one output pin, with the remaining two pins being power (+5 V) and ground. This part was made in various through-hole and surface-mount packages, including flat pack and plastic/ceramic dual in-line.
The NOR gate is a digital logic gate that implements logical NOR - it behaves according to the truth table to the right. A HIGH output (1) results if both the inputs to the gate are LOW (0); if one or both input is HIGH (1), a LOW output (0) results.
Height of package from pin tip to top of package. T Thickness of pin. L Length of package body only. L W Pin width. L L Pin length from package to pin tip. P Pin pitch (distance between conductors to the PCB). W B Width of the package body only. W L Length from pin tip to pin tip on the opposite side.
Pin-to-pin compatible devices share an assignment of functions to pins, but may have differing electrical characteristics (supply voltages, or oscillator frequencies) or thermal characteristics (TDPs, reflow curves, or temperature tolerances). As a result, their use in a system may require that portions of the system, such as its power delivery ...
Open outputs configurations thus differ from push–pull outputs, which use a pair of transistors to output a specific voltage or current. These open outputs configurations are often used for digital applications when the transistor acts as a switch , to allow for logic-level conversion, wired-logic connections , and line sharing.
288-pin: DDR4 SDRAM and DDR5 SDRAM [7] SO-DIMM. 72-pin: FPM DRAM and EDO DRAM; [8] different pin configuration from 72-pin SIMM; 144-pin: SDR SDRAM, [8] sometimes used for DDR2 SDRAM; 200-pin: DDR SDRAM [8] and DDR2 SDRAM; 204-pin: DDR3 SDRAM; 260-pin: DDR4 SDRAM; 260-pin: UniDIMMs carrying either DDR3 or DDR4 SDRAM; differently notched than ...
In electronics, a lead (/ ˈ l iː d /) or pin is an electrical connector consisting of a length of wire or a metal pad (surface-mount technology) ...