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74VHCT541AMTR

P1-P3P4-P6P7-P9
1/9June 2001
■ HIGH SPEED: t
PD
= 4.1 ns (TYP.) at V
CC
= 5V
■ LOW POWER DISSIPATION:
I
CC
= 4 µA (MAX.) at T
A
=25°C
■ COMPATIBLE WITH TTL OUTPUTS:
V
IH
= 2V (MIN.), V
IL
= 0.8V (MAX)
■ POWER DOWN PROTECTION ON INPUTS
& OUTPUTS
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 8 mA (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
■ LOW NOISE: V
OLP
= 0.9V (MAX.)
DESCRIPTION
The 74VHCT541A 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 technology.
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
74VHCT541 offers a pinout having inputs and
outputs on opposite sides of the package.
Power down protection is provided on all inputs
and outputs and 0 to 7V can be accepted on
inputs with no regard to the supply voltage. This
device can be used to interface 5V to 3V since all
inputs are equipped with TTL threshold.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
74VHCT541A
OCTAL BUS BUFFER
WITH 3 STATE OUTPUTS (NON INVERTED)
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE TUBE T & R
SOP 74VHCT541AM 74VHCT541AMTR
TSSOP 74VHCT541ATTR
TSSOPSOP
74VHCT541A
2/9
INPUT 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
1) Output in OFF State
2) High or Low State
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
INPUT OUTPUT
G1
G2 An Yn
HXXZ
XHXZ
LLHH
LLLL
Symbol Parameter Value Unit
V
CC
Supply Voltage
-0.5 to +7.0 V
V
I
DC Input Voltage
-0.5 to +7.0 V
V
O
DC Output Voltage (see note 1)
-0.5 to +7.0 V
V
O
DC Output Voltage (see note 2) -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
± 25 mA
I
CC
or I
GND
DC V
CC
or Ground Current
± 50 mA
T
stg
Storage Temperature
-65 to +150 °C
T
L
Lead Temperature (10 sec)
300 °C
74VHCT541A
3/9
RECOMMENDED OPERATING CONDITIONS
1) Output in OFF State
2) High or Low State
3) VIN from 0.8V to 2V
DC SPECIFICATIONS
AC ELECTRICAL CHARACTERISTICS (Input t
r
= t
f
= 3ns)
(*) Voltage range is 5.0V ± 0.5V
Symbol Parameter Value Unit
V
CC
Supply Voltage
4.5 to 5.5 V
V
I
Input Voltage
0 to 5.5 V
V
O
Output Voltage (see note 1)
0 to 5.5 V
V
O
Output Voltage (see note 2) 0 to V
CC
V
T
op
Operating Temperature
-55 to 125 °C
dt/dv
Input Rise and Fall Time (see note 3) (V
CC
= 5.0 ± 0.5V)
0 to 20 ns/V
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 to
5.5
222V
V
IL
Low Level Input
Voltage
4.5 to
5.5
0.8 0.8 0.8 V
V
OH
High Level Output
Voltage
4.5
I
O
=-50 µA
4.4 4.5 4.4 4.4
V
4.5
I
O
=-8 mA
3.94 3.8 3.7
V
OL
Low Level Output
Voltage
4.5
I
O
=50 µA
0.0 0.1 0.1 0.1
V
4.5
I
O
=8 mA
0.36 0.44 0.55
Ioz High Impedance
Output Leakege
Current
4.5 to
5.5
V
I
= V
IH
or V
IL
V
O
= 0V to 5.5V
±0.25 ± 2.5 ± 2.5 µA
I
I
Input Leakage
Current
0 to
5.5
V
I
= 5.5V or GND
± 0.1 ± 1.0 ± 1.0 µA
I
CC
Quiescent Supply
Current
5.5
V
I
= V
CC
or GND
44040µA
I
CC
Additional Worst
Case Supply
Current
5.5
One Input at 3.4V,
other input at V
CC
or GND
1.35 1.5 1.5 mA
I
OPD
Output Leakage
Current
0
V
OUT
= 5.5V
0.5 5.0 5.0 µA
Symbol Parameter
Test Condition Value
Unit
V
CC
(*)
(V)
C
L
(pF)
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 15 4.1 6.0 1.0 6.5 1.0 6.5
ns
5.0 50 6.2 8.5 1.0 9.5 1.0 9.5
t
PZL
t
PZH
Output Disable
Time
5.0 15
RL = 1K
Ω
5.0 7.0 1.0 8.0 1.0 8.0
ns
5.0 50 7.5 10.0 1.0 12.0 1.0 12.0
t
PLZ
t
PHZ
Output Enable
Time
5.0 50 RL = 1K
Ω 7.0 10.0 1.0 12.0 1.0 12.0 ns
P1-P3P4-P6P7-P9

74VHCT541AMTR

Mfr. #:
Buy 74VHCT541AMTR
Manufacturer:
STMicroelectronics
Description:
Buffers & Line Drivers Octal Bus Buffer
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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