Datasheet

SN54AHC126, SN74AHC126
QUADRUPLE BUS BUFFER GATES
WITH 3-STATE OUTPUTS
SCLS257L – DECEMBER 1995 – REVISED JULY 2003
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54AHC126 SN74AHC126
UNIT
MIN MAX MIN MAX
UNIT
V
CC
Supply voltage 2 5.5 2 5.5 V
V
CC
= 2 V 1.5 1.5
V
IH
High-level input voltage
V
CC
= 3 V
2.1 2.1
V
V
CC
= 5.5 V 3.85 3.85
V
CC
= 2 V 0.5 0.5
V
IL
Low-level input voltage
V
CC
= 3 V
0.9 0.9
V
V
CC
= 5.5 V 1.65 1.65
V
I
Input voltage 0 5.5 0 5.5 V
V
O
Output voltage 0 V
CC
0 V
CC
V
V
CC
= 2 V –50 –50 A
I
OH
High-level output current
V
CC
= 3.3 V ± 0.3 V
–4 –4
mA
V
CC
= 5 V ± 0.5 V –8 –8
mA
V
CC
= 2 V 50 50 A
I
OL
Low-level output current
V
CC
= 3.3 V ± 0.3 V
4 4
mA
V
CC
= 5 V ± 0.5 V 8 8
mA
∆t/∆v
In
p
ut transition rise or fall rate
V
CC
= 3.3 V ± 0.3 V 100 100
ns/V
∆t/∆v
Input
transition
rise
or
fall
rate
V
CC
= 5 V ± 0.5 V 20 20
ns/V
T
A
Operating free-air temperature –55 125 –40 85 °C
NOTE 3: All unused inputs of the device must be held at V
CC
or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
T
A
= 25°C SN54AHC126 SN74AHC126
UNIT
PARAMETER
TEST
CONDITIONS
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
2 V 1.9 2 1.9 1.9
I
OH
= –50 A
3 V 2.9 3 2.9 2.9
V
OH
4.5 V 4.4 4.5 4.4 4.4
V
OH
I
OH
= –4 mA
3 V 2.58 2.48 2.48
I
OH
= –8 mA
4.5 V 3.94 3.8 3.8
2 V 0.1 0.1 0.1
I
OL
= 50 A
3 V 0.1 0.1 0.1
V
OL
4.5 V 0.1 0.1 0.1
V
OL
I
OL
= 4 mA
3 V 0.36 0.5 0.44
I
OL
= 8 mA
4.5 V 0.36 0.5 0.44
I
I
V
I
= 5.5 V or GND 0 V to 5.5 V ±0.1 ±1* ±1 A
I
OZ
V
O
= V
CC
or GND 5.5 V ±0.25 ±2.5 ±2.5 A
I
CC
V
I
= V
CC
or GND, I
O
= 0 5.5 V 4 40 40 A
C
i
V
I
= V
CC
or GND 5 V 4 10 10 pF
* On products compliant to MIL-PRF-38535, this parameter is not production tested at V
CC
= 0 V.