Datasheet
SN54ALS652, SN54ALS653, SN54AS651, SN54AS652
SN74ALS651A, SN74ALS652A, SN74ALS653, SN74ALS654, SN74AS651, SN74AS652
OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SDAS066G – DECEMBER 1983 – REVISED DECEMBER 2000
7
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
: Control inputs –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O ports –0.5 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
JA
(see Note 1): DW package 46°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NT package 67°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.
NOTE 1: The package thermal impedance is calculated in accordance with JESD 51.
recommended operating conditions
SN74ALS651A
UNIT
MIN NOM MAX
UNIT
V
CC
Supply voltage 4.5 5 5.5 V
V
IH
High-level input voltage 2 V
V
IL
Low-level input voltage 0.8 V
I
OH
High-level output current –15 mA
I
Low level output current
24
mA
I
OL
L
ow-
l
eve
l
ou
t
pu
t
curren
t
48
‡
m
A
f
clock
Clock frequency 0 40 MHz
t
Pulse duration
CLKBA or CLKAB high 12.5
ns
t
w
Pulse
duration
CLKBA or CLKAB low 12.5
ns
t
su
Setup time before CLKAB↑ or CLKBA↑ A or B 10 ns
t
h
Hold time after CLKAB↑ or CLKBA↑ A or B 0 ns
T
A
Operating free-air temperature 0 70 °C
‡
Applies only to the SN74ALS651A-1 and only if V
CC
is maintained between 4.75 V and 5.25 V
recommended operating conditions
SN54ALS652 SN74ALS652A
UNIT
MIN NOM MAX MIN NOM MAX
UNIT
V
CC
Supply voltage 4.5 5 5.5 4.5 5 5.5 V
V
IH
High-level input voltage 2 2 V
V
IL
Low-level input voltage 0.7 0.8 V
I
OH
High-level output current –12 –15 mA
I
Low level output current
12 24
mA
I
OL
L
ow-
l
eve
l
ou
t
pu
t
curren
t
48
‡
m
A
f
clock
Clock frequency 0 35 0 40 MHz
t
Pulse duration
CLKBA or CLKAB high 14.5 12.5
ns
t
w
Pulse
duration
CLKBA or CLKAB low 14.5 12.5
ns
t
su
Setup time before CLKAB↑ or CLKBA↑ A or B 15 10 ns
t
h
Hold time after CLKAB↑ or CLKBA↑ A or B 5 0 ns
T
A
Operating free-air temperature –55 125 0 70 °C
‡
Applies only to the SN74ALS652A-1 and only if V
CC
is maintained between 4.75 V and 5.25 V