SN54ABT377, SN74ABT377
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH CLOCK ENABLE
SCBS156B – FEBRUARY 1991 – REVISED JULY 1994
2–3
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
(see Note 1) –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high state or power-off state, V
O
–0.5 V to 5.5 V. . . . . . . . . . . . .
Current into any output in the low state, I
O
: SN54ABT377 96 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ABT377 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0) –18 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0) –50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum power dissipation at T
A
= 55°C (in still air) (see Note 2): DB package 0.6 W. . . . . . . . . . . . . . . . . . . .
DW package 1.6 W. . . . . . . . . . . . . . . . . . .
N package 1.3 W. . . . . . . . . . . . . . . . . . . . .
Storage temperature range –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 maximum package power dissipation is calculated using a junction temperature of 150°C and a board trace length of 750 mils,
except for the N package, which has a trace length of zero. For more information, refer to the
Package Thermal Considerations
application note in the 1994
ABT Advanced BiCMOS Technology Data Book
, literature number SCBD002B.
recommended operating conditions (see Note 3)
SN54ABT377 SN74ABT377
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
A
Operating free-air temperature –55 125 –40 85 °C
NOTE 3: Unused or floating inputs must be held high or low.
