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PDF 74ACT299B Data sheet ( Hoja de datos )
| Número de pieza | 74ACT299B | |
| Descripción | 8 BIT PIPO SHIFT REGISTER WITH ASYNCHRONOUS CLEAR | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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® 74ACT299
8 BIT PIPO SHIFT REGISTER
WITH ASYNCHRONOUS CLEAR
s HIGH SPEED:
fMAX = 170 MHz (TYP.) at VCC = 5V
s LOW POWER DISSIPATION:
ICC = 8 µA (MAX.) at TA = 25 oC
s COMPATIBLE WITH TTL OUTPUTS
VIH = 2V (MIN), VIL = 0.8V (MAX)
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) = 4.5V to 5.5V
s PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 299
s IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The ACT299 is an high-speed CMOS 8-BIT PIPO
SHIFT REGISTERS (3-STATE) 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 equivalent Bipolar Schottky
TTL.
PRELIMINARY DATA
BM
(Plastic Package)
(Micro Package)
ORDER CODES :
74ACT299B
74ACT299M
These devices have four modes (HOLD, SHIFT
LEFT, SHIFT RIGHT and LOAD DATA). Each
mode is chosen by two function select inputs (S0,
S1) as shown in the Truth Table.
When one or both enable inputs, (G1, G2) are
high, the eight input/output terminals are in
the high-impedance state ; however sequential
operation or clearing of the register is not
affected. Clear function is synchronous to clock.
The device is designed to interface directly High
Speed CMOS systems with TTL, NMOS and
CMOS output voltage levels.
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
April 1999
1/13
1 page  
74ACT299
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC Supply Voltage
-0.5 to +7
V
VI DC Input Voltage
-0.5 to VCC + 0.5
V
VO DC Output Voltage
-0.5 to VCC + 0.5
V
IIK DC Input Diode Current
± 20 mA
IOK DC Output Diode Current
± 20 mA
IO DC Output Current
± 50 mA
ICC or IGND DC VCC or Ground Current
± 400
mA
Tstg Storage Temperature
-65 to +150
oC
TL Lead Temperature (10 sec)
300 oC
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
RECOMMENDED OPERATING CONDITIONS
Symbol
Pa ram et er
VCC Supply Voltage
VI Input Voltage
VO Output Voltage
Top Operating Temperature:
dt/dv Input Rise and Fall Time VCC = 4.5 to 5.5V (note 1)
1) VIN from 0.8 V to 2.0 V
Value
4.5 to 5.5
0 to VCC
0 to VCC
-40 to +85
8
Unit
V
V
V
oC
ns/V
5/13
5 Page 
74ACT299
DIM.
a1
B
b
b1
D
E
e
e3
F
I
L
Z
Plastic DIP-20 (0.25) MECHANICAL DATA
MIN.
0.254
1.39
mm
TYP.
0.45
0.25
8.5
2.54
22.86
3.3
MAX.
1.65
25.4
7.1
3.93
1.34
MIN.
0.010
0.055
inch
TYP.
0.018
0.010
0.335
0.100
0.900
0.130
MAX.
0.065
1.000
0.280
0.155
0.053
P001J
11/13
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet 74ACT299B.PDF ] | |
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