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74VHCT08AM Schematic ( PDF Datasheet ) - Fairchild Semiconductor

Teilenummer 74VHCT08AM
Beschreibung Quad 2-Input AND Gate
Hersteller Fairchild Semiconductor
Logo Fairchild Semiconductor Logo 




Gesamt 6 Seiten
74VHCT08AM Datasheet, Funktion
July 1997
Revised March 1999
74VHCT08A
Quad 2-Input AND Gate
General Description
The VHCT08A is an advanced high speed CMOS 2 Input
AND Gate fabricated with silicon gate CMOS technology. It
achieves the high-speed operation similar to equivalent
Bipolar Schottky TTL while maintaining the CMOS low
power dissipation.
The internal circuit is composed of 4 stages including buffer
output, which provide high noise immunity and stable out-
put.
Protection circuits ensure that 0V to 7V can be applied to
the input pins without regard to the supply voltage and to
the output pins with VCC = 0V. These circuits prevent
device destruction due to mismatched supply and input/
output voltages. This device can be used to interface 3V to
5V systems and two supply systems such as battery
backup.
Features
s High speed: tPD = 5.0 ns (typ) at TA = 25°C
s High noise immunity: VIH = 2.0V, VIL = 0.8V
s Power down protection is provided on all inputs and
outputs
s Low noise: VOLP = 0.8V (max)
s Low power dissipation:
ICC = 2 µA (max) @ TA = 25°C
s Pin and function compatible with 74HCT08
Ordering Code:
Order Number Package Number
Package Description
74VHCT08AM
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
74VHCT08ASJ
M14D
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74VHCT08AMTC
MTC14
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74VHCT08AN
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code
Logic Symbol
Connection Diagram
IEEE/IEC
Pin Descriptions
Pin Names
An, Bn
On
Description
Inputs
Outputs
Truth Table
A
L
L
H
H
B
L
H
L
H
O
L
L
L
H
© 1999 Fairchild Semiconductor Corporation DS500025.prf
www.fairchildsemi.com






74VHCT08AM Datasheet, Funktion
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Package Number N14A
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.

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