ESD Protected ...................................................
High Peak Output Current ........................ 1.2A Peak
Capability ...................................... 1000pF in 38nsec
Wide Operating Range ........................... 4.5V to 16V
Low Delay Time ...................................... 75nsec Max
Low Output Impedance ........................................ 8
鈩?/div>
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GENERAL DESCRIPTION
The TC1426/27/28 are a family of 1.2A dual high- speed
drivers. CMOS fabrication is used for low power consump-
tion and high efficiency.
These devices are fabricated using an epitaxial layer to
effectively short out the intrinsic parasitic transistor respon-
sible for CMOS latch-up. They incorporate a number of other
design and process refinements to increase their long-term
reliability.
The TC1426 is compatible with the bipolar DS0026, but
only draws 1/5 of the quiescent current. The TC1426/27/28
are also compatible with the TC426/27/28, but with 1.2A
peak output current rather than the 1.5A of the TC426/27/28
devices.
Other compatible drivers are the TC4426/27/28 and the
TC4426A/27A/28A. The TC4426/27/28 have the added
feature that the inputs can withstand negative voltage up to
5V with diode protection circuits. The TC4426A/27A/28A
have matched input to output leading edge and falling edge
delays, tD1 and tD2, for processing short duration pulses in
the 25 nanoseconds range. All of the above drivers are pin
compatible.
The high-input impedance TC1426/27/28 drivers are
CMOS/TTL input-compatible, do not require the speed-up
needed by the bipolar devices, and can be directly driven by
most PWM ICs.
This family of devices is available in inverting and non-
inverting versions. Specifications have been optimized to
achieve low-cost and high-performance devices, well-suited
for the high-volume manufacturer.
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Temp. Range
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
APPLICATIONS
s
s
s
s
s
Power MOSFET Drivers
Switched Mode Power Supplies
Pulse Transformer Drive
Small Motor Controls
Print Head Drive
PIN CONFIGURATIONS
NC 1
IN A 2
GND 3
IN B 4
2, 4
7, 5
TC1426CPA
8 NC
NC 1
TC1427CPA
8 NC
NC 1
TC1428CPA
8 NC
7 OUT A
6 V
DD
5 OUT B
2
7
7 OUT A IN A 2
6 V
DD
GND 3
7 OUT A IN A 2
6 V
DD
GND 3
5 OUT B IN B 4
2, 4
7, 5
5 OUT B IN B 4
INVERTING
NC = NO CONNECTION
NON-INVERTING
4
5
NC 1
IN A 2
GND 3
IN B 4
2, 4
7, 5
8 NC
NC 1
TC1427COA
8 NC
NC 1
TC1428COA
8 NC
7 OUT A
6 V
DD
5 OUT B
2
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ORDERING INFORMATION
Part No.
TC1426COA
TC1426CPA
TC1427COA
7 OUT A IN A 2
TC1426COA
6 V
DD
GND 3
5 OUT B IN B 4
2, 4
7 OUT A IN A 2
6 V
DD
GND 3
5 OUT B IN B 4
7, 5
Package
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
INVERTING
NC = NO CONNECTION
NON-INVERTING
4
5
FUNCTIONAL BLOCK DIAGRAM
V+
500碌A(chǔ)
2.5mA
TC1427CPA
TC1428COA
TC1428CPA
7
TC1426 INVERTING
TC1427 NONINVERTING
TC1428 INVERTING/NONINVERTING
NONINVERTING
OUTPUT
(TC1427)
INVERTING
OUTPUT
(TC1426)
INPUT
NOTE:
TC1428 has one inverting and one noninverting driver.
Ground any unused driver input.
TC1426/7/8-8 10/11/96
GND
8
4-207
TELCOM SEMICONDUCTOR, INC.
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