Impellimax Standard PIN Diode Drivers

Here is a brief explanation of our Standard PIN Diode Driver numbering system. For detailed data sheets and application notes (in compact .PDF format), the very best place to go is our APPNOTE DOWNLOAD AREA !

Example: NX340B4-T Noninverting Extremely fast 3 channel 40 mA +5, -15V driver in 3/8 by 5/8 ceramic package, full 883 screening.

LOGIC CODES:

N:  Noninverting TTL compatible. Logic '1' produces positive output.

I:  Inverting TTL compatible. Logic '1' produces negative output.

S:  Strappable TTL compatible. Driver is inverting when INV input is used, or noninverting when NONINV input is used and INV and TP are connected.

X:  Exclusive-Or Mode Control TTL. Tie mode control to ground for noninverting operation, or tie mode control to +5V for inverting.

M:  Mode control (exclusive nor) TTL. Logical complement to 'X' logic.

D:  Decoded Binary TTL. Two or three bit input word selects one output to go negative out while all others stay positive out.

T:  Toggle TTL. One TTL input controls a pair of complementary outputs.

G:  Type code used to indicate a GaAs MMIC switch driver. See GaAs driver numbering sheet for specifics.

C:  Complement Logic Input. Line receiver TTL with two complement inputs per channel.

E:  ECL unbalanced (1 line) noninverting driver.

B:  Balanced ECL (2 line) driver.

SPEED CODES:

S:  Slow. 40 nsec typical, 100 nsec max.

F:  Fast. 8 nsec typical, 12 nsec max.

X:  Extremely Fast. 5 nsec typical, 8 nsec max.

NUMBER OF CHANNELS:

For drivers of logic codes N, I, S, X, M, C, E and B, each output constitutes a separate channel.
For drivers of logic codes T and G (See GaAs driver sheet) each pair of complementary outputs constitutes one channel.
For logic code D drivers, each output is counted as a separate channel.
The third character of a driver's Impellimax part number is a numeral from 1 thru 9 which is the total quantity of channels per driver as defined above.

OUTPUT CURRENT:

The following output currents are available as standard parts:

These output currents are nominal values of positive current into a resistive load. For the list given above, the load resistances (in ohms) are:

These are standard RETMA values chosen to produce a voltage drop of approximately one volt at the nominal current value. In Impellimax drivers, unless stated otherwise in the particular data sheet, negative output current is nominally equal in magnitude to positive output current when the negative bias is -5V. This negative ouput current typically increases linearly versus increasing negative bias.

VOLTAGE CODES:

Maximum negative supply voltage:

These are operating values.

Other standard supply voltage codes:

PACKAGE CODES:

The last character of a driver's Impellimax part number is as given below:

QUALITY AND ENVIRONMENTAL CODES (Hyphenated):

Typical commercial screening for packaged Impellimax drivers is as follows:

Substrate drivers receive Visual Inspection and Electrical Test.

QA and Environmental testing, in addition to these steps, is available and is indicated by a hyphenated letter code suffix (or suffixes) as follows: