SN54ALS174, SN54ALS175, SN54AS174, SN54AS175B
SN74ALS174, SN74ALS175, SN74AS174, SN74AS175B
HEX/QUADRUPLE D-TYPE FLIP-FLOPS WITH CLEAR
SDAS207E - APRIL 1982 - REVISED MAY 2002
absolute maximum ratings over operating free-air temperature range, SN54/74AS174,
†
SN54/74AS175B (unless otherwise noted)
Supply voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
CC
Input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
I
Package thermal impedance, θ (see Note 1): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W
JA
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64°C/W
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
stg
†
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 51-7.
recommended operating conditions (see Note 2)
SN54AS174
SN74AS174
SN54AS175B
SN74AS175B
UNIT
MIN NOM MAX
MIN NOM MAX
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Operating free-air temperature
IH
0.8
–2
0.8
–2
20
70
V
IL
I
I
mA
mA
°C
OH
20
OL
T
A
–55
125
0
NOTE 2: All unused inputs of the device must be held at V
or GND to ensure proper device operation. Refer to the TI application report,
CC
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54AS174
SN74AS174
SN54AS175B
SN74AS175B
PARAMETER
TEST CONDITIONS
UNIT
‡
‡
MIN TYP
MAX
MIN TYP
MAX
V
V
V
V
V
V
V
V
V
V
= 4.5 V,
I = –18 mA
–1.2
–1.2
V
V
IK
CC
CC
CC
CC
CC
CC
CC
I
= 4.5 V to 5.5 V,
= 4.5 V,
I
= –2 mA
V
CC
–2
V
CC
–2
OH
OL
OH
OL
I
= 20 mA
0.35
0.5
0.1
0.35
0.5
0.1
V
I
I
I
I
= 5.5 V,
V = 7 V
I
mA
µA
mA
mA
I
= 5.5 V,
V = 2.7 V
I
20
20
IH
IL
= 5.5 V,
V = 0.4 V
I
–0.5
–112
45
–0.5
–112
45
§
= 5.5 V,
V
O
= 2.25 V
–30
–30
O
’AS174
30
30
I
V
CC
= 5.5 V,
See Note 4
mA
CC
’AS175B
22.5
34
22.5
34
‡
§
All typical values are at V
= 5 V, T = 25°C.
A
CC
The output conditions have been chosen to produce a current that closely approximates one-half of the true short-circuit output current, I
.
OS
NOTE 4:
I
is measured with D inputs, CLR, and CLK grounded.
CC
5
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