SCBS081L − JANUARY 1991 − REVISED APRIL 2005
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage range, V
CC
−0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
(except I/O ports) (see Note 1) −0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high or power-off state, V
O
−0.5 V to 5.5 V. . . . . . . . . . . . . . . . . . .
Current into any output in the low state, I
O
: SN54ABT245A 96 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ABT245B 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0) −18 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0) −50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
JA
(see Note 2): DB package 70°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 2): DGV package 92°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 2): DW package 58°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 2): GQN/ZQN package 78°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 2): N package 69°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 2): NS package 60°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 2): PW package 83°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 3): RGY package 37°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
−65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
3. The package thermal impedance is calculated in accordance with JESD 51-5.
recommended operating conditions (see Note 4)
SN54ABT245A SN74ABT245B
MIN MAX MIN MAX
V
CC
Supply voltage 4.5 5.5 4.5 5.5 V
V
IH
High-level input voltage 2 2 V
V
IL
Low-level input voltage 0.8 0.8 V
V
I
Input voltage 0 V
CC
0 V
CC
V
I
OH
High-level output current −24 −32 mA
I
OL
Low-level output current 48 64 mA
∆t/∆v Input transition rise or fall rate 5 5 ns/V
∆t/∆V
CC
Power-up ramp rate 200 µs/V
T
A
Operating free-air temperature −55 125 −40 85 °C
NOTE 4: 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.
