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74ACT125MTR

P1-P3P4-P6P7-P9
1/9July 2001
■ HIGH SPEED: t
PD
= 5ns (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 125
■ IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74ACT125 is an advanced high-speed CMOS
QUAD BUS BUFFER fabricated with sub-micron
silicon gate and double-layer metal wiring C
2
MOS
technology.
This device require the 3-STATE control input G
to
be set high to place the output in high impedance
state.
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.
74ACT125
QUAD BUS BUFFERS (3-STATE)
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE TUBE T & R
DIP 74ACT125B
SOP 74ACT125M 74ACT125MTR
TSSOP 74ACT125TTR
TSSOPDIP SOP
74ACT125
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, 4, 10, 13 G1
to G4 Output Enable Inputs
2, 5, 9, 12 A1 to A4 Data Inputs
3, 6, 8, 11 Y1 to Y4 Data Outputs
7 GND Ground (0V)
14
V
CC
Positive Supply Voltage
AG
Y
XHZ
LLL
HLH
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
± 200 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
74ACT125
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 Leakage
Current
5.5
V
I
= V
IH
or V
IL
V
O
= V
CC
or GND
± 0.5 ± 5 ± 5 mA
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
(*)
1.0 5.0 9.0 1.0 10.0 1.0 10.0 ns
t
PZL
t
PZH
Output Enable
Time
5.0
(*)
1.0 5.0 9.0 1.0 10.0 1.0 10.0 ns
t
PLZ
t
PHZ
Output Disable
Time
5.0
(*)
1.0 5.0 9.0 1.0 10.0 1.0 10.0 ns
P1-P3P4-P6P7-P9

74ACT125MTR

Mfr. #:
Buy 74ACT125MTR
Manufacturer:
STMicroelectronics
Description:
Buffers & Line Drivers Quad Bus Buffer
Lifecycle:
New from this manufacturer.
Delivery:
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