STMICROELECTRONICS 74V2T125STR

74V2T125
DUAL BUS BUFFER (3-STATE)
PRELIMINARY DATA
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HIGH SPEED: tPD = 3.8ns (TYP.) at VCC = 5V
LOW POWER DISSIPATION:
ICC = 1µA(MAX.) at TA=25°C
COMPATIBLE WITH TTL OUTPUTS:
VIH = 2V (MIN), VIL = 0.8V (MAX)
POWER DOWN PROTECTION ON INPUTS
AND OUTPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 8mA (MIN)
BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL
OPERATING VOLTAGE RANGE:
VCC(OPR) = 4.5V to 5.5V
IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74V2T125 is an advanced high-speed CMOS
DUAL BUS BUFFER fabricated with sub-micron
silicon gate and double-layer metal wiring C2MOS
tecnology.
3-STATE control input nG has to be set HIGH to
place the output into the high impedance state.
Power down protection is provided on all inputs
and outputs and 0 to 7V can be accepted on
SOT23-8L
SOT323-8L
ORDER CODES
PACKAGE
T&R
SOT23-8L
SOT323-8L
74V2T125STR
74V2T125CTR
inputs with no regard to the supply voltage. This
device can be used to interface 3V to 5V systems
and it is ideal for portable applications like
personal digital assistant, camcorder and all
battery-powered equipment.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them ESD immunity and transient excess voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
December 2001
1/10
This is preliminary information on a new product now in development are or undergoing evaluation. Details subject to change without notice.
74V2T125
INPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
SYMBOL
1, 7
2, 5
3, 6
4
1G, 2G
1A, 2A
2Y, 1Y
GND
VCC
8
NAME AND FUNCTION
Output Enable Inputs
Data Inputs
Data Outputs
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
A
G
Y
X
L
H
H
L
L
Z
L
H
X: "H" or "L"
Z: High Impedance
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
Parameter
Supply Voltage
VI
DC Input Voltage
VO
DC Output Voltage
Value
Unit
-0.5 to +7.0
V
-0.5 to +7.0
V
-0.5 to VCC + 0.5
− 20
V
mA
IIK
DC Input Diode Current
IOK
DC Output Diode Current
− 20
mA
IO
DC Output Current
± 25
mA
ICC or IGND DC VCC or Ground Current
Tstg
Storage Temperature
TL
Lead Temperature (10 sec)
± 50
mA
-65 to +150
°C
260
°C
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
Symbol
VCC
Parameter
Supply Voltage
Unit
4.5 to 5.5
V
VI
Input Voltage
0 to 5.5
V
VO
Output Voltage
0 to VCC
V
Top
Operating Temperature
dt/dv
Input Rise and Fall Time (note 1) (VCC = 5.0 ± 0.5V)
1) VIN from 0.8V to 2V
2/10
Value
-55 to 125
°C
0 to 20
ns/V
74V2T125
DC SPECIFICATION
Test Condition
Symbol
VIH
VIL
VOH
VOL
IOZ
II
IOPD
ICC
ICC
Parameter
4.5 to
5.5
4.5 to
5.5
Low Level Output
Voltage
High Impedance
Output Leakage
Current
Input Leakage
Current
Power down Output
Leakage Current
Quiescent Supply
Current
Additional Worst
Case Supply
Current
TA = 25°C
VCC
(V)
High Level Input
Voltage
Low Level Input
Voltage
High Level Ouput
Voltage
Value
Min.
Typ.
Max.
0.8
-40 to 85°C
-55 to 125°C
Min.
Min.
0.8
2.0
4.5
IO=-50 µA
4.4
4.5
IO=-8 mA
3.94
4.5
IO=50 µA
4.5
Max.
4.5
0.0
Max.
0.8
2.0
V
2.0
4.4
4.4
3.8
3.7
Unit
V
V
0.1
0.1
0.1
IO=8 mA
0.36
0.44
0.55
5.5
VI = VIH or VIL
VO = 5.5 or GND
±0.25
± 2.5
±5
µA
0 to
5.5
VI = 5.5V or GND
± 0.1
±1
±1
µA
0
VO = 5.5
0.5
5
10
µA
5.5
VI = VCC or GND
1
10
20
µA
One Input at 3.4V,
other input at VCC
or GND
1.35
1.5
1.5
mA
5.5
V
AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3ns)
Test Condition
Symbol
Parameter
tPLH
tPHL
Propagation Delay
Time
tPLZ
tPHZ
tPZL
tPZH
VCC
(V)
Value
TA = 25°C
CL
(pF)
-55 to 125°C
Typ.
Max.
Min.
Max.
Min.
Max.
15
3.8
5.5
1.0
6.5
1.0
7.5
50
4.3
6.5
1.0
7.5
1.0
8.5
RL = 1 KΩ
3.6
5.0
1.0
6.0
1.0
7.0
50
RL = 1 KΩ
5.1
7.0
1.0
8.0
1.0
9.0
5.0(*)
15
RL = 1 KΩ
3.7
5.9
1.0
7.0
1.0
8.0
5.0(*)
50
RL = 1 KΩ
4.1
6.5
1.0
7.5
1.0
8.5
5.0
(*)
5.0
(*)
Output Disable
Time
5.0
(*)
15
5.0
(*)
Output Enable
Time
Min.
-40 to 85°C
Unit
ns
(*) Voltage range is 5.0V ± 0.5V
3/10
74V2T125
CAPACITIVE CHARACTERISTICS
Test Condition
Symbol
Value
TA = 25°C
Parameter
Min.
CIN
Input Capacitance
COUT
Output
Capacitance
Power Dissipation
Capacitance
(note 1)
CPD
Typ.
Max.
4
10
-40 to 85°C
-55 to 125°C
Min.
Min.
Max.
Unit
Max.
10
10
pF
6
pF
14
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 current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/2
TEST CIRCUIT TEST CIRCUIT
TEST
tPLH, tPHL
SWITCH
Open
tPZL, tPLZ
VCC
tPZH, tPHZ
GND
CL =15/50pF or equivalent (includes jig and probe capacitance)
R1 = 1KΩ or equivalent
RT = ZOUT of pulse generator (typically 50Ω)
4/10
74V2T125
WAVEFORM 1 : PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)
5/10
74V2T125
SOT23-8L MECHANICAL DATA
mm.
mils
DIM.
MIN.
MAX.
MIN.
TYP.
MAX.
A
0.90
1.45
35.4
57.1
A1
0.00
0.15
0.0
5.9
A2
0.90
1.30
35.4
51.2
b
0.22
0.38
8.6
14.9
C
0.09
0.20
3.5
7.8
D
2.80
3.00
110.2
118.1
E
2.60
3.00
102.3
118.1
E1
1.50
1.75
59.0
68.8
e
0
e1
L
6/10
TYP
0.35
.65
25.6
1.95
76.7
0.55
13.7
21.6
74V2T125
SOT323-8L MECHANICAL DATA
mm.
mils
DIM.
MIN.
TYP
MAX.
MIN.
TYP.
MAX.
A
0.80
1.10
31.5
43.3
A1
0.00
0.10
0.0
3.9
A2
0.80
1.00
31.5
34.9
b
0.13
0.28
5.1
11.0
C
0.10
0.18
3.9
7.1
D
1.80
2.20
70.9
86.6
E
1.80
2.40
70.9
94.5
E1
1.15
1.35
45.3
53.1
e
0.5
19.7
e1
1.5
59.0
L
0.10
0.30
3.9
11.8
7/10
74V2T125
Tape & Reel SOT23-xL MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
A
MIN.
TYP.
180
13.0
13.2
MAX.
7.086
C
12.8
D
20.2
0.795
N
60
2.362
T
8/10
MAX.
0.504
0.512
14.4
0.519
0.567
Ao
3.13
3.23
3.33
0.123
0.127
0.131
Bo
3.07
3.17
3.27
0.120
0.124
0.128
Ko
1.27
1.37
1.47
0.050
0.054
0.0.58
Po
3.9
4.0
4.1
0.153
0.157
0.161
P
3.9
4.0
4.1
0.153
0.157
0.161
74V2T125
Tape & Reel SOT323-xL MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
MAX.
MIN.
TYP.
MAX.
A
175
180
185
6.889
7.086
7.283
C
12.8
13
13.2
0.504
0.512
0.519
D
20.2
N
59.5
0.795
60
T
60.5
2.362
14.4
0.567
Ao
2.25
0.088
Bo
2.7
0.106
Ko
1.2
0.047
Po
3.98
4
4.2
0.156
0.157
0.165
P
3.98
4
4.2
0.156
0.157
0.165
9/10
74V2T125
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
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© 2001 STMicroelectronics - Printed in Italy - All Rights Reserved
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