74LVT126
3.3 V quad buffer; 3-state
Rev. 04 — 11 February 2005
Product data sheet
1. General description
The LVT126 is a high-performance BiCMOS product designed for V
CC
operation at 3.3 V.
This device combines low static and dynamic power dissipation with high speed and high
output drive. The 74LVT126 device is a quad buffer that is ideal for driving bus lines. The
device features four output enable inputs (1OE, 2OE, 3OE and 4OE), each controlling one
of the 3-state outputs.
2. Features
s
s
s
s
s
s
s
s
s
s
s
Quad bus interface
3-state buffers
Output capability: +64 mA and
−32
mA
TTL input and output switching levels
Input and output interface capability to systems at 5 V supply
Bus-hold data inputs eliminate the need for external pull-up resistors to hold unused
inputs
Live insertion and extraction permitted
No bus current loading when output is tied to 5 V bus
Power-up 3-state
Latch-up protection:
x
JESD78: exceeds 500 mA
ESD protection:
x
MIL STD 883 method 3015: exceeds 2000 V
x
Machine model: exceeds 200 V
3. Quick reference data
Table 1:
Quick reference data
GND = 0 V; T
amb
= 25
°
C.
Symbol Parameter
t
PLH
t
PHL
C
I
C
O
I
CC
Conditions
Min
-
-
-
-
-
Typ
2.3
2.4
4
8
0.13
Max
-
-
-
-
-
Unit
ns
ns
pF
pF
mA
propagation delay nA to nY C
L
= 50 pF; V
CC
= 3.3 V
propagation delay nA to nY C
L
= 50 pF; V
CC
= 3.3 V
input capacitance
output capacitance
quiescent supply current
V
I
= 0 V or V
CC
outputs disabled;
V
O
= 0 V or 3.0 V
outputs disabled;
V
CC
= 3.6 V
Philips Semiconductors
74LVT126
3.3 V quad buffer; 3-state
4. Ordering information
Table 2:
Ordering information
Temperature range Name
74LVT126D
74LVT126DB
−40 °C
to +85
°C
−40 °C
to +85
°C
SO14
SSOP14
TSSOP14
Description
plastic shrink small outline package; 14 leads; body width
5.3 mm
plastic thin shrink small outline package; 14 leads; body
width 4.4 mm
Version
SOT337-1
SOT402-1
SOT762-1
Type number Package
plastic small outline package; 14 leads; body width 3.9 mm SOT108-1
74LVT126PW
−40 °C
to +85
°C
74LVT126BQ
−40 °C
to +85
°C
DHVQFN14 plastic dual in-line compatible thermal enhanced very thin
quad flat package; no leads; 14 terminals;
body 2.5
×
3
×
0.85 mm
5. Functional diagram
2
1A
1Y
3
2
1
EN1
1
3
1
1OE
5
2A
2Y
6
5
6
4
2OE
9
3A
4
3Y
8
9
8
10
4Y
11
10
3OE
12
4A
12
11
13
4OE
001aac482
13
001aac483
Fig 1. Logic symbol
Fig 2. IEC logic symbol
9397 750 14553
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 04 — 11 February 2005
2 of 15
Philips Semiconductors
74LVT126
3.3 V quad buffer; 3-state
6. Pinning information
6.1 Pinning
1OE
2
3
4
5
6
7
GND
3Y
8
1
14 V
CC
13 4OE
12 4A
11 4Y
10 3OE
9
3A
001aac485
terminal 1
index area
1OE
1A
1
2
3
4
5
6
7
001aac484
14 V
CC
13
4OE
12
4A
1A
1Y
2OE
126
GND
(1)
1Y
2OE
2A
2A
2Y
126
11 4Y
10
3OE
9
8
3A
2Y
GND
3Y
Transparent top view
(1) The die substrate is attached to the
exposed die pad using conductive die
attach material. It can not be used as
a supply pin or input.
Fig 3. Pin configuration SO14, SSOP14
and TSSOP14
Fig 4. Pin configuration DHVQFN14
6.2 Pin description
Table 3:
Symbol
1OE
1A
1Y
2OE
2A
2Y
GND
3Y
3A
3OE
4Y
4A
4OE
V
CC
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Description
1 output enable input
1 data input
1 data output
2 output enable input
2 data input
2 data output
ground (0 V)
3 data output
3 data input
3 output enable input
4 data output
4 data input
4 output enable input
supply voltage
9397 750 14553
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 04 — 11 February 2005
3 of 15
Philips Semiconductors
74LVT126
3.3 V quad buffer; 3-state
7. Functional description
7.1 Function table
Table 4:
Input
nOE
H
H
L
[1]
H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
Function table
[1]
Output
nA
L
H
X
nY
L
H
Z
8. Limiting values
Table 5:
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to
GND (ground = 0 V).
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
T
stg
T
j
[1]
[2]
Parameter
supply voltage
input voltage
output voltage
input diode current
output diode current
output current
storage temperature
junction temperature
Conditions
[1]
Min
−0.5
−0.5
−0.5
-
-
-
-
−65
[2]
Max
+4.6
+7.0
+7.0
−50
−50
128
−64
+150
150
Unit
V
V
V
mA
mA
mA
mA
°C
°C
output in OFF-state or
HIGH-state
V
I
< 0 V
V
O
< 0 V
output in LOW-state
output in HIGH-state
[1]
-
The input and output negative voltage ratings may be exceeded if the input and output clamp current ratings
are observed.
The performance capability of a high-performance integrated circuit in conjunction with its thermal
environment can create junction temperatures which are detrimental to reliability.
9397 750 14553
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 04 — 11 February 2005
4 of 15
Philips Semiconductors
74LVT126
3.3 V quad buffer; 3-state
9. Recommended operating conditions
Table 6:
Symbol
V
CC
V
I
V
IH
V
IL
I
OH
I
OL
Recommended operating conditions
Parameter
supply voltage
input voltage
HIGH-level input voltage
LOW-level input voltage
HIGH-level output current
LOW-level output current
none
current duty cycle
≤
50 %; f
≥
1 kHz
∆t/∆V
T
amb
input transition rise or fall
rate
ambient temperature
outputs enabled
in free air
Conditions
Min
2.7
0
2.0
-
-
-
-
-
−40
Typ
-
-
-
-
-
-
-
-
-
Max
3.6
5.5
-
0.8
−32
32
64
10
+85
Unit
V
V
V
V
mA
mA
mA
ns/V
°C
10. Static characteristics
Table 7:
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
T
amb
=
−40 °C
to +85
°C
[1]
V
IK
V
OH
input diode voltage
HIGH-level output voltage
I
IK
=
−18
mA; V
CC
= 2.7 V
I
OH
=
−100 µA;
V
CC
= 2.7 V to 3.6 V;
I
OH
=
−8
mA; V
CC
= 2.7 V
I
OH
=
−32
mA; V
CC
= 3.0 V
V
OL
LOW-level output voltage
V
CC
= 2.7 V
I
OL
= 100
µA
I
OL
= 24 mA
V
CC
= 3.0 V
I
OL
= 16 mA
I
OL
= 32 mA
I
OL
= 64 mA
I
LI
input leakage current
all input pins
control pins
data pins
I
OFF
I
HOLD
V
CC
= 0 V or 3.6 V; V
I
= 5.5 V
V
CC
= 3.6 V; V
CC
or GND
V
CC
= 3.6 V; V
I
= V
CC
V
CC
= 3.6 V; V
I
= 0 V
power-down output current V
CC
= 0 V; V
I
or V
O
= 0 V to 4.5 V
bus hold current A input
V
CC
= 3 V; V
I
= 0.8 V
V
CC
= 3 V; V
I
= 2.0 V
V
CC
= 0 V to 3.6 V; V
I
= 3.6 V
[3]
[2]
[2]
Conditions
Min
-
Typ
−0.9
Max
−1.2
Unit
V
V
V
V
V
V
V
V
V
µA
µA
µA
µA
µA
µA
µA
µA
V
CC
−
0.2 V
CC
−
0.1 -
2.4
2.0
-
-
-
-
-
-
-
-
-
-
75
−75
±500
2.5
2.2
0.1
0.3
0.25
0.3
0.4
1
±0.1
0.1
−1
1
150
−150
-
-
-
0.2
0.5
0.4
0.5
0.55
10
±1
1
−5
±100
-
-
-
9397 750 14553
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 04 — 11 February 2005
5 of 15
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