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74AC299 반도체 회로 부품 판매점

8 BIT PIPO SHIFT REGISTER



STMicroelectronics 로고
STMicroelectronics
74AC299 데이터시트, 핀배열, 회로
74AC299
8 BIT PIPO SHIFT REGISTER
WITH ASYNCHRONOUS CLEAR
s HIGH SPEED:
s fMAX = 240MHz (TYP.) at VCC = 5V
s LOW POWER DISSIPATION:
ICC = 8µA(MAX.) at TA=25°C
s HIGH NOISE IMMUNITY:
)VNIH = VNIL = 28 % VCC (MIN.)
t(ss 50TRANSMISSION LINE DRIVING
CAPABILITY
ucs SYMMETRICAL OUTPUT IMPEDANCE:
d|IOH| = IOL = 24mA (MIN)
ro )s BALANCED PROPAGATION DELAYS:
P t(stPLH tPHL
s OPERATING VOLTAGE RANGE:
lete ucVCC (OPR) = 2V to 6V
ds PIN AND FUNCTION COMPATIBLE WITH
so ro74 SERIES 299
b Ps IMPROVED LATCH-UP IMMUNITY
- O teDESCRIPTION
) leThe 74AC299 is an advanced high-speed CMOS
t(s o8-BIT PIPO SHIFT REGISTER (3-STATE)
sfabricated with sub-micron silicon gate and
c bdouble-layer metal wiring C2MOS technology.
du OThese devices have four modes (HOLD, SHIFT
ro -LEFT, SHIFT RIGHT and LOAD DATA). Each
P t(s)mode is chosen by two function select inputs (S0,
DIP
SOP
TSSOP
ORDER CODES
PACKAGE
DIP
SOP
TSSOP
TUBE
74AC299B
74AC299M
T&R
74AC299MTR
74AC299TTR
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
asynchronous to clock.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
OObbssoolleettee ProducPIN CONNECTION AND IEC LOGIC SYMBOLS
April 2001
1/13


74AC299 데이터시트, 핀배열, 회로
74AC299
INPUT AND OUTPUT EQUIVALENT CIRCUIT
duct(s)PIN DESCRIPTION
Pro t(s)PIN No
1, 19
lete uc2, 3
d7, 13, 6, 14, 5, 15, 4, 16
so ro8, 17
b P9
- O te11
12
) le18
t(s so10
c b20
SYMBOL
S0, S1
G1, G2
A/QA to H/QH
QA’ to QH’
CLEAR
SR
CLOCK
SL
GND
VCC
NAME AND FUNCTION
Mode Select Inputs
3-State Output Enable Inputs (Active LOW)
Parallel Data Inputs or 3-State Parallel Outputs (Bus Driver)
Serial Outputs (Standard Output)
Asynchronous Master Reset Input (Active LOW)
Serial Data Shift Right Input
Clock Input (LOW to HIGH, Edge-triggered)
Serial Data Shift Left Input
Ground (0V)
Positive Supply Voltage
du - OTRUTH TABLE
te Pro ct(s)MODE
le uCLEAR
bso ProdZ
O teCLEAR
leHOLD
soSHIFT
bRIGHT
O SHIFT
L
L
L
H
H
H
H
INPUTS
FUNCTION
SELECTED
OUTPUT
CONTROL
S1 S0 G1* G2*
HH X X
LXL L
XL L L
LLLL
LHL L
LHL L
HL L L
CLOCK
X
X
X
X
INPUTS/OUTPUTS
OUTPUTS
SERIAL
SL SR
XX
XX
XX
XX
XH
XL
HX
A/QA H/QH QA’ QH’
Z
L
L
QA0
H
L
QBn
Z
L
L
QH0
QGn
QGn
H
L
L
L
QA0
H
L
QBn
L
L
L
QH0
QGn
QGn
H
LEFT
H
H
L
L
L
L X QBn L QBn L
LOAD
H
H
H
X
X
X X ahah
* When one or both controls are high, the eight input/output terminals are the high impedance state: howewer sequential operation or cleaning
of the register is not affected.
Z : High Impedance
Qn0 : The level of An before the indicated steady state input conditions were established.
Qnn : The level of Qn before the most recent active transition indicated by OR
a, h : The level of the steadystate inputs A, H, respectively.
X : Don’t Care
2/13




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74AC299 register

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