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74ACT541TTR

P1-P3P4-P6P7-P9
1/9April 2001
■ HIGH SPEED: t
PD
= 4ns (TYP.) at V
CC
= 5V
■ LOW POWER DISSIPATION:
I
CC
= 4µA(MAX.) at T
A
=25°C
■ COMPATIBLE WITH TTL OUTPUTS
V
IH
= 2V (MIN.), V
IL
= 0.8V (MAX.)
■ 50Ω TRANSMISSION LINE DRIVING
CAPABILITY
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 24mA (MIN)
■ BALANCED PROPAGATION DELAYS:
t
PLH
≅ t
PHL
■ OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 4.5V to 5.5V
■ PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 541
■ IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74ACT541 is an advanced high-speed CMOS
OCTAL BUS BUFFER (3-STATE) fabricated with
sub-micron silicon gate and double-layer metal
wiring C
2
MOS tecnology.
The 3 STATE control gate operates as two 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
74ACT541 offers a pinout having inputs and
outputs on opposite sides of the package.
This device is designed to interface directly High
Speed CMOS systems with TTL, NMOS and
CMOS output voltage levlels.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
74ACT541
OCTAL BUS BUFFER
WITH 3 STATE OUTPUTS (NON INVERTED)
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE TUBE T & R
DIP 74ACT541B
SOP 74ACT541M 74ACT541MTR
TSSOP 74ACT541TTR
TSSOPDIP SOP
74ACT541
2/9
INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
Z : High Impedance
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
RECOMMENDED OPERATING CONDITIONS
1) V
IN
from 0.8V to 2.0V
PIN No SYMBOL NAME AND FUNCTION
1, 19 G1
, G2 Output Enable Inputs
2, 3, 4, 5, 6,
7, 8, 9
A1 to A8 Data Inputs
18, 17, 16,
15, 14, 13,
12, 11
Y1 to Y8 Data Outputs
10 GND Ground (0V)
20 V
CC
Positive Supply Voltage
INPUTS OUTPUT
G1
G2 An Yn
HXXZ
XHXZ
LLHH
LLLL
Symbol Parameter Value Unit
V
CC
Supply Voltage
-0.5 to +7 V
V
I
DC Input Voltage -0.5 to V
CC
+ 0.5
V
V
O
DC Output Voltage -0.5 to V
CC
+ 0.5
V
I
IK
DC Input Diode Current
± 20 mA
I
OK
DC Output Diode Current
± 20 mA
I
O
DC Output Current
± 50 mA
I
CC
or I
GND
DC V
CC
or Ground Current
± 400 mA
T
stg
Storage Temperature
-65 to +150 °C
T
L
Lead Temperature (10 sec)
300 °C
Symbol Parameter Value Unit
V
CC
Supply Voltage
4.5 to 5.5 V
V
I
Input Voltage 0 to V
CC
V
V
O
Output Voltage 0 to V
CC
V
T
op
Operating Temperature
-55 to 125 °C
dt/dv
Input Rise and Fall Time V
CC
= 4.5 to 5.5V (note 1)
8 ns/V
74ACT541
3/9
DC SPECIFICATIONS
1) Maximum test duration 2ms, one output loaded at time
2) Incident wave switching is guaranteed on transmission lines with impedances as low as 50Ω
AC ELECTRICAL CHARACTERISTICS (C
L
= 50 pF, R
L
= 500 Ω, Input t
r
= t
f
= 3ns)
(*) Voltage range is 5.0V ± 0.5V
Symbol Parameter
Test Condition Value
Unit
V
CC
(V)
T
A
= 25°C
-40 to 85°C -55 to 125°C
Min. Typ. Max. Min. Max. Min. Max.
V
IH
High Level Input
Voltage
4.5 V
O
= 0.1 V or
V
CC
-0.1V
2.0 1.5 2.0 2.0
V5.5 2.0 1.5 2.0 2.0
V
IL
Low Level Input
Voltage
4.5 V
O
= 0.1 V or
V
CC
-0.1V
1.5 0.8 0.8 0.8
5.5 1.5 0.8 0.8 0.8
V
V
OH
High Level Output
Voltage
4.5
I
O
=-50 µA
4.4 4.49 4.4 4.4
5.5
I
O
=-50 µA
5.4 5.49 5.4 5.4
4.5
I
O
=-24 mA
3.86 3.76 3.7
V
5.5
I
O
=-24 mA
4.86 4.76 4.7
V
OL
Low Level Output
Voltage
4.5
I
O
=50 µA
0.001 0.1 0.1 0.1
5.5
I
O
=50 µA
0.001 0.1 0.1 0.1
4.5
I
O
=24 mA
0.36 0.44 0.5
5.5
I
O
=24 mA
0.36 0.44 0.5
I
I
Input Leakage Cur-
rent
5.5
V
I
= V
CC
or GND
± 0.1 ± 1 ± 1 µA
I
OZ
High Impedance
Output Leakege
Current
5.5
V
I
= V
IH
or V
IL
V
O
= V
CC
or GND
± 0.5 ± 5 ± 5 µA
I
CCT
Max I
CC
/Input
5.5
V
I
= V
CC
- 2.1V
0.6 1.5 1.6 mA
I
CC
Quiescent Supply
Current
5.5
V
I
= V
CC
or GND
44080µA
I
OLD
Dynamic Output
Current (note 1, 2)
5.5
V
OLD
= 1.65 V max
75 50 mA
I
OHD
V
OHD
= 3.85 V min
-75 -50 mA
Symbol Parameter
Test Condition Value
Unit
V
CC
(V)
T
A
= 25°C
-40 to 85°C -55 to 125°C
Min. Typ. Max. Min. Max. Min. Max.
t
PLH
t
PHL
Propagation Delay
Time
5.0
(*)
1.5 4.0 6.5 1.5 8.0 1.5 8.0 ns
t
PZL
t
PZH
Output Enable
Time
5.0
(*)
1.5 6.0 7.8 1.5 9.0 1.5 9.0 ns
t
PLZ
t
PHZ
Output Disable
Time
5.0
(*)
1.5 5.0 7.8 1.5 9.0 1.5 9.0 ns
P1-P3P4-P6P7-P9

74ACT541TTR

Mfr. #:
Buy 74ACT541TTR
Manufacturer:
STMicroelectronics
Description:
Buffers & Line Drivers Octal Bus Buffer
Lifecycle:
New from this manufacturer.
Delivery:
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