Dictionary N

The voltage between the n-well and the source.

NOTE The n-well is the bulk of a P-MOSFET.

JESD90, 11/04

An environment of a semiconductor device in which the power loss in the device is dissipated by means of air currents whose velocity is less than 120 feet per minute, by radiation losses from the sur­face of the device, and by an unspecified amount of conduction losses through the leads to the electrical connections.

RS-323, 3/66

Negative bias temperature instability.

JESD90, 11/04

See "no (internal) connection (pin)".

Any portion of the characteristic within which the differential resistance is negative.

JESD77-B, 2/00

The representation of the logic 1-state and the logic 0-state by the low and high levels, respectively. (Ref. ANSI/IEEE Std 91.)

JESD99B, 5/07

A thyristor surge suppressor whose static characteristic has a negative-resistance slope between the breakover point and a higher-current, lower-voltage point at which switching occurs.

JESD77-B, 2/00

The input threshold voltage when the input voltage is falling.

JESD99B, 5/07

A unique interconnection of specific circuit elements.

NOTE The primary inputs and primary outputs are considered to be circuit elements.

JESD12-1B, 8/93
JESD99B, 5/07

A list of all nets of a circuit.

JESD12-1B, 8/93
JESD99B, 5/07

The conversion of a netlist from one format to another.

JESD12-1B, 8/93
JESD99B, 5/07

See "no function".

A binary character string operated upon as a unit and shorter than a byte.

NOTE A nibble is usually four bits.

JESD100-B, 12/99

A device that has a parallel four-bit data interface.

NOTE For memory devices, this term should not be confused with "nibble mode", which refers to a serial-data-access mode.

JESD21-C, 1/97
JESD100-B#, 12/99

A terminal that has no internal connection and that can be used as a support for external wiring without disturbing the function of the device, provided that the voltage applied to this terminal (by means of the wiring) does not exceed the highest supply voltage rating of the circuit.

NOTE 1 If higher voltages are acceptable, this should be stated.

NOTE 2 The IEC equivalent term is "blank terminal"; nevertheless, the IEC abbreviation is "NC".

JESD21-C#, 1/97
JESD77-B, 2/00
JESD78A#, 2/06
JESD99B, 5/07

An input that is electrically connected to the device but for which the signal has no function in the device operation.

JESD21-C, 1/97

A pin position on a package where the pin has been purposely left blank or removed after assembly. No physical pin is allowed in this position.

JESD21-C, 1/97

(1) A definable point in the process at which form, fit, or function of the product or service is altered.

(2) The end-point of a branch in a network or a point at which two or more branches meet.

EIA-557-A, 7/95
JEP131A, 5/05
JESD659B, 2/07
JESD12-5, 8/88

The current of an ideal current source (i.e., one having infinite internal impedance) in parallel with the input terminals of the device that represents the part of the internally generated noise that can properly be represented by a current source.

NOTE In the definition, the equivalent input noise voltage, which would be needed for a complete and precise description of the device noise, is neglected. If the external source impedance is infinite, the noise current represents the total noise.

JESD77-B, 2/00
RS-311-A, 11/81

The rms input signal or illumination power level needed to increase the output power to twice the value obtained with no input signal or illumination.

JESD99B, 5/07