High Peak Output Current ............................... 1.5A
Wide Operating Range .......................... 4.5V to 18V
Drive Capability ................. 1000 pF in 25 nsec Typ
Short Delay Time ................................. 30 nsec Typ
鈥?With Logic 鈥?鈥?Input ............................ 1 mA Typ
鈥?With Logic 鈥?鈥?Input ......................... 100
Low Output Impedance ................................ 7
鈩?/div>
Typ
Latch-Up Protected: Will Withstand 0.5A
Reverse Current
Input Will Withstand Negative Inputs Up to 5V
ESD Protected .................................................... 4 kV
Pinout Same as TC426/TC427/TC428
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GENERAL DESCRIPTION
The TC4426A/4427A/4428A are improved versions of
the earlier TC426/427/428 family of buffer/drivers (with
which they are pin compatible). They will not latch up under
any conditions within their power and voltage ratings. They
are not subject to damage when up to 5V of noise spiking (of
either polarity) occurs on the ground pin. They can accept,
without damage or logic upset, up to 500 mA of reverse
current (of either polarity) being forced back into their
outputs. All terminals are fully protected against up to 4 kV
of electrostatic discharge.
As MOSFET drivers, the TC4426A/4427A/4428A can
easily switch 1000 pF gate capacitances in under 30 ns, and
provide low enough impedances in both the ON and OFF
states to ensure the MOSFET's intended state will not be
affected, even by large transients.
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6
7
s
s
s
s
s
PIN CONFIGURATIONS
NC 1
IN A 2
GND 3
IN B 4
8 NC
7 OUT A
NC 1
IN A 2
GND 3
IN B 4
8 NC
7 OUT A
NC 1
IN A 2
GND 3
IN B 4
8 NC
7 OUT A
ORDERING INFORMATION
Part No.
Package
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
8-Pin CerDIP
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
8-Pin CerDIP
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
8-Pin CerDIP
Temp. Range
0擄C to +70擄C
0擄C to +70擄C
鈥?40擄C to +85擄C
鈥?40擄C to +85擄C
鈥?55擄C to +125擄C
0擄C to +70擄C
0擄C to +70擄C
鈥?40擄C to +85擄C
鈥?40擄C to +85擄C
鈥?55擄C to +125擄C
0擄C to +70擄C
0擄C to +70擄C
鈥?40擄C to +85擄C
鈥?40擄C to +85擄C
鈥?55擄C to +125擄C
TC4426A
6 V
DD
5 OUT B
TC4427A
6 VDD
5 OUT B
TC4428A
6 VDD
5 OUT B
2
2,4
7,5
2,4
7,5
4
INVERTING
NC = NO INTERNAL CONNECTION
NOTE:
SOIC pinout is identical to DIP.
NONINVERTING
7
TC4426ACOA
TC4426ACPA
TC4426AEOA
TC4426AEPA
TC4426AMJA
TC4427ACOA
TC4427ACPA
TC4427AEOA
TC4427AEPA
TC4427AMJA
TC4428ACOA
TC4428ACPA
TC4428AEOA
TC4428AEPA
TC4428AMJA
5
DIFFERENTIAL
FUNCTIONAL BLOCK DIAGRAM
INVERTING
OUTPUTS
2 mA
300 mV
V
DD
OUTPUT
NONINVERTING
OUTPUTS
INPUT
4.7V
TC4426A/TC4427A/TC4428A
GND
EFFECTIVE INPUT
C = 12 pF
NOTES:
1. TC4426A has 2 inverting drivers; TC4427A has 2 noninverting drivers.
2. TC4428A has one inverting and one noninverting driver.
3. Ground any unused driver input.
8
TC4426A/7A/8A-9 10/21/96
TELCOM SEMICONDUCTOR, INC.
4-251
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