TC4404 TELCOM [TelCom Semiconductor, Inc], TC4404 Datasheet

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TC4404

Manufacturer Part Number
TC4404
Description
1.5A DUAL OPEN-DRAIN MOSFET DRIVERS
Manufacturer
TELCOM [TelCom Semiconductor, Inc]
Datasheet

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1.5A DUAL OPEN-DRAIN MOSFET DRIVERS
FEATURES
APPLICATIONS
FUNCTIONAL BLOCK DIAGRAM
ORDERING INFORMATION
Part No.
TC4404COA
TC4404CPA
TC4404EOA
TC4404EPA
TC4404MJA
TC4405COA
TC4405CPA
TC4405EOA
TC4405EPA
TC4405MJA
Independently-Programmable Rise and Fall Times
Low Output Impedance ................................ 7
High Speed t
Short Delay Times .................................... < 30 nsec
Wide Operating Range .......................... 4.5V to 18V
Latch-Up Protected ......... Will Withstand >500 mA
Reverse Current (Either Polarity)
Input Withstands Negative Swings Up to –5V
Motor Controls
Driving Bipolar Transistors
Driver for Nonoverlapping Totem Poles
Reach-Up/Reach-Down Driver
TELCOM SEMICONDUCTOR, INC.
R
, t
INPUT
F
GND
Package
8-Pin SOIC
8-Pin PDIP
8-Pin SOIC
8-Pin PDIP
8-Pin CerDIP
8-Pin SOIC
8-Pin PDIP
8-Pin SOIC
8-Pin PDIP
8-Pin CerDIP
....... <30 nsec with 1000 pF Load
2 (3)
4
EFFECTIVE
C 12 pF
INPUT
4.7V
– 55 C to +125 C
– 55 C to +125 C
– 40 C to +85 C
– 40 C to +85 C
– 40 C to +85 C
– 40 C to +85 C
0 C to +70 C
0 C to +70 C
0 C to +70 C
0 C to +70 C
Temperature
Range
300 mV
Typ
NONINVERTING
INVERTING
TC4404
TC4405
A (B)
GENERAL DESCRIPTION
constructed with complementary MOS outputs, where the
drains of the totem-pole output have been left separated so
that individual connections can be made to the pull-up and
pull-down sections of the output. This allows the insertion
of drain-current-limiting resistors in the pull-up and/or pull-
down sections, allowing the user to define the rates of rise
and fall for a capacitive load; or a reduced output swing, if
driving a resistive load, or to limit base current, when
driving a bipolar transistor. Minimum rise and fall times,
with no resistors, will be less than 30 nsec for a 1000-pF
load. There is no upper limit.
where slow-ON/fast-OFF operation is desired, these de-
vices are superior to the previously-used technique of add-
ing a diode-resistor combination between the driver output
and the MOSFET, because they allow accurate control of
turn-ON, while maintaining fast turn-OFF and maximum
noise immunity for an OFF device.
maintain the high speeds common to other TelCom driv-
ers. They allow insertion of a base current-limiting resistor,
while providing a separate half-output for fast turn-OFF. By
proper positioning of the resistor, either npn or pnp transis-
tors can be driven.
drivers, because they eliminate shoot-through currents in
the output stage, require significantly less power at higher
frequencies, and can be helpful in meeting low-power
budgets.
the other, these devices can also be used as open-drain
buffer/drivers where both drains are available in one device,
The TC4404 and TC4405 are CMOS buffer-drivers
For driving MOSFETs in motor-control applications,
When used to drive bipolar transistors, these drivers
For driving many loads in low-power regimes, these
Because neither drain in an output is dependent on
8 (6)
7 (5)
1
V DD
PULL UP
PULL DOWN
TC4404
TC4405
TC4404/5-6 10/21/96
4-219
1
2
3
4
5
6
7
8

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TC4404 Summary of contents

Page 1

... EFFECTIVE INPUT TELCOM SEMICONDUCTOR, INC. GENERAL DESCRIPTION The TC4404 and TC4405 are CMOS buffer-drivers Typ constructed with complementary MOS outputs, where the drains of the totem-pole output have been left separated so that individual connections can be made to the pull-up and pull-down sections of the output. This allows the insertion ...

Page 2

... TC4404 TC4405 thus minimizing chip count. Unused open drains should be returned to the supply rail that their device sources are connected to (pull-downs to ground, pull-ups to V prevent static damage. In addition, in situations where timing resistors or other means of limiting crossover currents are used, like drains may be paralleled for greater current carrying capacity ...

Page 3

... A TOP BOTTOM 6 B TOP TC4404 5 B BOTTOM A TOP BOTTOM 6 B TOP TC4405 5 B BOTTOM 4-221 ...

Page 4

... TC4404 TC4405 18V 4 2,3 8,7 INPUT INPUT: 100 kHz, square wave, t RISE = t FALL 10 nsec 4-222 +5V INPUT 10% 0V 18V 90% 0.1 F OUTPUT 0V OUTPUT C = 1000 pF L +5V INPUT 10% 0V 18V t D1 OUTPUT 0V NONINVERTING DRIVER Figure 1. Switching Time Test Circuit 1.5A DUAL OPEN-DRAIN MOSFET DRIVERS 90% ...

Page 5

... TEMPERATURE ( C) Propagation Delay Time vs. Temperature 17. LOAD = 1000 –55 –35 – 105 125 TEMPERATURE ( C) TC4404 TC4405 Rise TIme vs. Capacitive Load 100 + 10V 15V 100 1000 ...

Page 6

... WORST CASE +150 TYP @ + Driving Bipolar Transistors TC4405 GND REACH-UP AND REACH-DOWN DRIVING +12V +12V SWITCHED +12V +5V +5V FROM TTL TC4404 GND GND SWITCHED –12V –12V –12V TELCOM SEMICONDUCTOR, INC ...

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