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74LVQ163MTR датащи(PDF) 1 Page - STMicroelectronics

номер детали 74LVQ163MTR
подробное описание детали  SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
Download  13 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74LVQ163MTR датащи(HTML) 1 Page - STMicroelectronics

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July 2001
s
HIGH SPEED:
fMAX = 180 MHz (TYP.) at VCC = 3.3 V
s
COMPATIBLE WITH TTL OUTPUTS
s
LOW POWER DISSIPATION:
ICC = 4 µA (MAX.) at TA=25°C
s
LOW NOISE:
VOLP = 0.3V (TYP.) at VCC = 3.3V
s
75
Ω TRANSMISSION LINE DRIVING
CAPABILITY
s
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 12mA (MIN) at VCC = 3.0 V
s
PCI BUS LEVELS GUARANTEED AT 24 mA
s
BALANCED PROPAGATION DELAYS:
tPLH tPHL
s
OPERATING VOLTAGE RANGE:
VCC(OPR) = 2V to 3.6V (1.2V Data Retention)
s
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 163
s
IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The
74LVQ163
is
a
low
voltage
CMOS
SYNCHRONOUS
PRESETTABLE
COUNTER
fabricated
with
sub-micron silicon gate and
double-layer metal wiring C2MOS technology. It is
ideal
for
low
power
and
low
noise
3.3V
applications. It is a 4 bit binary counter with
Synchronous Clear.
The circuit have four fundamental modes of
operation, in order of preference: synchronous
reset, parallel load, count-up and hold. Four
control inputs, Master Reset (CLEAR), Parallel
Enable Input (LOAD), Count Enable Input (PE)
and Count Enable Carry Input (TE), determine the
mode of operation as shown in the Truth Table. A
LOW signal on CLEAR overrides counting and
parallel loading and allows all outputs to go LOW
on the next rising edge of CLOCK. A LOW signal
on
LOAD
overrides
counting
and
allows
information on Parallel Data Qn inputs to be
loaded into the flip-flops on the next rising edge of
CLOCK. With LOAD and CLEAR, PE and TE
permit counting when both are high. Conversely, a
LOW signal on either PE and TE inhibits counting.
All
inputs
and
outputs
are
equipped
with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
74LVQ163
SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE
TUBE
T & R
SOP
74LVQ163M
74LVQ163MTR
TSSOP
74LVQ163TTR
TSSOP
SOP


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