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74VHCT14AM 数据表(PDF) 1 Page - STMicroelectronics

部件名 74VHCT14AM
功能描述  HEX SCHMITT INVERTER
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

74VHCT14AM 数据表(HTML) 1 Page - STMicroelectronics

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74VHCT14A
HEX SCHMITT INVERTER
PRELIMINARY DATA
®
August 1999
s
HIGH SPEED: tPD = 4 ns (TYP.) at VCC =5V
s
LOW POWER DISSIPATION:
ICC =2
µA (MAX.) at TA =25 oC
s
TYPICAL HYSTERESIS: 0.7V at VCC = 4.5V
s
POWER DOWN PROTECTION ON INPUTS &
OUTPUTS
s
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH|=IOL = 8 mA (MIN)
s
BALANCED PROPAGATION DELAYS:
tPLH
≅ tPHL
s
OPERATING VOLTAGE RANGE:
VCC (OPR) = 4.5V to 5.5V
s
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 14
s
IMPROVED LATCH-UP IMMUNITY
s
LOW NOISE: VOLP = 0.8V (Max.)
DESCRIPTION
The 74VHCT14A is an advanced high-speed
CMOS HEX SCHMITT INVERTER fabricated
with sub-micron silicon gate and double-layer
metal wiring C
2MOS technology.
The internal circuit is composed of 3 stages
including buffer output, which enable high noise
immunity and stable output.
Power down protection is provided on all inputs
and outputs and 0 to 7V can be accepted on
inputs with no regard to the supply voltage. This
device can be used to interface 5V to 3V.
Pin configuration and function are the same as
those of
the VHC04 but the VHC14 has
hysteresis.
This together with its schmitt trigger function
allows it to be used on line receivers with slow
rise/fall input signals.
All inputs
and
outputs are
equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES :
74VHCT14AM
74VHCT14AT
M
(Micro Package)
T
(TSSOP Package)
1/7


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