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PDF 74AC163M Data sheet ( Hoja de datos )
| Número de pieza | 74AC163M | |
| Descripción | SYNCHRONOUS PRESETTABLE 4-BIT COUNTER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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® 74AC163
SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
s HIGH SPEED:
fMAX =200 MHz (TYP.) at VCC = 5V
s LOW POWER DISSIPATION:
ICC = 4 µA (MAX.) at TA = 25 oC
s HIGH NOISE IMMUNITY:
VNIH = VNIL = 28% VCC (MIN.)
s 50Ω TRANSMISSION LINE DRIVING
CAPABILITY
s SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 24 mA (MIN)
s BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL
s OPERATING VOLTAGE RANGE:
VCC (OPR) = 2V to 6V
s PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 163
s IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The AC163 is a high-speed CMOS
SYNCRONOUS PRESETTABLE COUNTERS
fabricated with sub-micron silicon gate and
double-layer metal wiring C2MOS technology. It is
ideal for low power applications mantaining high
speed operation similar to eqivalent Bipolar
Schottky TTL. It is a 4 bit binary counter with
Synchronous Clear.
The circuits have four fundamental modes of
operation, in order of preference: synchronous
PIN CONNECTION AND IEC LOGIC SYMBOLS
BM
(Plastic Package)
(Micro Package)
ORDER CODES :
74AC163B
74AC163M
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
output 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.
December 1998
1/12
1 page  
74AC163
DC SPECIFICATIONS
Symb ol
Parameter
Test Conditions
VCC
(V)
Valu e
TA = 25 oC
-40 to 85 oC
Min. T yp. Max. Min. Max.
VIH High Level Input Voltage
3.0
4.5
VO = 0.1 V or
VCC - 0.1 V
2.1 1.5
3.15 2.25
2.1
3.15
5.5
3.85 2.75
3.85
VIL Low Level Input Voltage
3.0
4.5
VO = 0.1 V or
VCC - 0.1 V
1.5 0.9
2.25 1.35
0.9
1.35
5.5
2.75 1.65
1.65
VOH High Level Output Voltage
3.0
IO=-50 µA 2.9 2.99
2.9
4.5 VI(* ) = IO=-50 µA 4.4 4.49
5.5 VIH or IO=-50 µA 5.4 5.49
3.0 VIL IO=-12 mA 2.56
4.4
5.4
2.46
4.5 IO=-24 mA 3.86
3.76
5.5 IO=-24 mA 4.86
4.76
VOL Low Level Output Voltage
3.0
IO=50 µA
0.002 0.1
0.1
4.5 VI(* ) = IO=50 µA
5.5 VIH or IO=50 µA
3.0 VIL IO=12 mA
0.001
0.001
0.1
0.1
0.36
0.1
0.1
0.44
4.5 IO=24 mA
0.36 0.44
II Input Leakage Current
5.5 IO=24 mA
5.5 VI = VCC or GND
0.36
±0.1
0.44
±1
ICC Quiescent Supply Current
5.5
VI = VCC or GND
4 40
IOLD Dynamic Output Current
5.5 VOLD = 1.65 V max
IOHD (note 1, 2)
VOHD = 3.85 V min
1) Maximum test duration 2ms, one output loaded attime
2) Incident wave switching is guaranteed on transmission lines with impedances as low as 50 Ω.
(*) All outputs loaded.
75
-75
Unit
V
V
V
V
µA
µA
mA
mA
5/12
5 Page 
DIM.
A
a1
a2
b
b1
C
c1
D
E
e
e3
F
G
L
M
S
MIN.
0.1
0.35
0.19
9.8
5.8
3.8
4.6
0.5
SO-16 MECHANICAL DATA
mm
TYP.
0.5
1.27
8.89
MAX.
1.75
0.2
1.65
0.46
0.25
MIN.
0.004
0.013
0.007
45 (typ.)
10 0.385
6.2 0.228
4.0 0.149
5.3 0.181
1.27 0.019
0.62
8 (max.)
inch
TYP.
0.019
0.050
0.350
74AC163
MAX.
0.068
0.007
0.064
0.018
0.010
0.393
0.244
0.157
0.208
0.050
0.024
P013H
11/12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet 74AC163M.PDF ] | |
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