DH3725C
DH3725C is quad NPN core driver manufactured by National Semiconductor.
description typical characteristics
The DH3725C consists of four 2N3725 type NPN transistors mounted in a 14-pin molded dual-in-line package_ The device is primarily intended for core memory application requiring operating currents in the ampere range, high stand-off voltage, and fast turn-on and turn-off tlmes_
Turn-ON Time Turn-OFF Time Collector Current Collector-Base Breakdown Voltage
Collector Saturation Voltage atle=l A Collector Saturation Voltage at Ie = 0_5A
18 ns 45 ns
1A 120V typo
O.55V
O.31V connection diagram
Dual-In-Llne Package
Order Number DH3725CD See Package 1
Ne Order Number DH3725CN See Package 22
TOP VIEW switching time test circuit
-38V
+30V
1p F
IKn ~VOUT
-D
10ll F t V,O&N~~'"I7..
<>-tj,V", I---+---'WY-I 1&2<
PW~1P1
_
"':"
ZIN=60fl
- DUTV CYCLE < 2%
TO SAMPLING SCOPE t,<1ns
IC '" 500 m A, ISl '" 50 m A, IS2 '" -50 m A
3-3 absolute maximum ratings
Collector to Base...