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74ACT541B PDF даташит

Спецификация 74ACT541B изготовлена ​​​​«STMicroelectronics» и имеет функцию, называемую «OCTAL BUS BUFFER WITH 3 STATE OUTPUTS NON INVERTED».

Детали детали

Номер произв 74ACT541B
Описание OCTAL BUS BUFFER WITH 3 STATE OUTPUTS NON INVERTED
Производители STMicroelectronics
логотип STMicroelectronics логотип 

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74ACT541B Даташит, Описание, Даташиты
® 74ACT541
OCTAL BUS BUFFER
WITH 3 STATE OUTPUTS (NON INVERTED)
s HIGH SPEED: tPD = 4 ns (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 50TRANSMISSION 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 541
s IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The ACT541 is an advanced CMOS OCTAL BUS
BUFFER (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
eqivalent Bipolar Schottky TTL.
The 3 STATE control gate operates as a two
PIN CONNECTION AND IEC LOGIC SYMBOLS
BM
(Plastic Package)
(Micro Package)
ORDER CODES :
74ACT541B
74ACT541M
input AND such that if either G1 and G2 are high,
all eight outputs are in the high impedance state.
In order to enhance PC board layout, the AC541
offers a pinout having inputs and outputs on
opposite sides of the package.
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.
December 1998
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74ACT541B Даташит, Описание, Даташиты
74ACT541
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1, 19
2, 3, 4,5,
6, 7,8, 9
18, 17, 16,
15, 14, 13,
12, 11
10
20
S YM BO L
G1, G2
A1 to A8
NAME AND FUNCTION
Output Enable Input
Data Inputs
Y1 to Y8 Data Outputs
GND
VCC
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
G1
H
X
L
L
X:”H” or ”L”
Z: High impedance
INPUT
G2
X
H
L
L
O UT PUT
An Yn
XZ
XZ
HH
LL
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 orIGND 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
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74ACT541B Даташит, Описание, Даташиты
74ACT541
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
4.5
5.5
VO = 0.1 V or
VCC - 0.1 V
2.0 1.5
2.0 1.5
2.0
2.0
VIL Low Level Input Voltage
4.5
5.5
VO = 0.1 V or
VCC - 0.1 V
1.5 0.8
1.5 0.8
0.8
0.8
VOH High Level Output
Voltage
VOL Low Level Output
Voltage
II Input Leakage Current
4.5
VI(*) =
IO=-50 µA
4.4 4.49
5.5 VIH or IO=-50 µA 5.4 5.49
4.5 VIL IO=-24 mA 3.86
4.4
5.4
3.76
5.5 IO=-24 mA 4.86
4.76
4.5
VI(*) =
IO=50 µA
5.5 VIH or IO=50 mA
4.5 VIL IO=24 mA
0.001
0.001
0.1
0.1
0.36
0.1
0.1
0.44
5.5 IO=24 mA
0.36 0.44
5.5 VI = VCC orGND
±0.1 ±1
IOZ 3 State Output Leakage
Current
5.5
VI = VIH orVIL
VO = VCC orGND
±0.5 ±5
ICCT Max ICC /Input
5.5 VI = VCC -2.1V
0.6
1.5
ICC Quiescent Supply
Current
5.5 VI = VCC orGND
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 .
75
-75
Unit
V
V
V
V
µA
µA
mA
µA
mA
mA
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 , Input tr = tf =3 ns)
Symb ol
Parameter
tPLH Propagation Delay Time
tPHL
tPZL Output Enable Time
tPZH
tPLZ Output Disable Time
tPHZ
(*) Voltage range is 5V ± 0.5V
T est Con ditio n
VCC
(V)
5.0(*)
5.0(*)
5.0(*)
Valu e
TA = 25 oC
-40 to 85 oC
Min. T yp. Max. Min. Max.
1.5 5 6.5 1.5 7.15
Unit
ns
1.5 6 7.8 1.5 8.5 ns
1.5 6 7.8 1.5 8.5 ns
CAPACITIVE CHARACTERISTICS
Sy mbo l
Parameter
Test Con dition s
VCC
(V)
Va l u e
TA = 25 oC
-40 to 85 oC
Min. Typ. Max. Min. Max.
Unit
CIN Input Capacitance
5.0
4 pF
CPD Power Dissipation
Capacitance (note 1)
5.0
22 pF
1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to
Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD VCC fIN + ICC/8 (per circuit)
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