CD54AC161 Datasheet, PDF (6/15 Pages) Texas Instruments – 4-BIT SYNCHRONOUS BINARY COUNTERS

CD54AC161, CD74AC161
4-BIT SYNCHRONOUS BINARY COUNTERS
SCHS239C – SEPTEMBER 1998 – REVISED MARCH 2003
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)^†
Supply voltage range, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 6 V
Input clamp current, I_IK (V_I < 0 V or V_I > V_CC) (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output clamp current, I_OK (V_O < 0 V or V_O > V_CC) (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous output current, I_O (V_O > 0 V or V_O < V_CC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through V_CC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100 mA
Package thermal impedance, θ_JA (see Note 3): E package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
M package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°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: 2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 4)
TA = 25°C
MIN MAX
–55°C to
125°C
MIN MAX
–40°C to
85°C
MIN MAX
UNIT
VCC Supply voltage
1.5 5.5 1.5 5.5 1.5 5.5 V
VCC = 1.5 V
1.2
1.2
1.2
VIH High-level input voltage
VCC = 3 V
2.1
2.1
2.1
V
VCC = 5.5 V
3.85
3.85
3.85
VCC = 1.5 V
0.3
0.3
0.3
VIL
Low-level input voltage
VCC = 3 V
0.9
0.9
0.9 V
VCC = 5.5 V
1.65
1.65
1.65
VI
Input voltage
0 VCC
0 VCC
0 VCC V
VO
Output voltage
0 VCC
0 VCC
0 VCC V
IOH High-level output current
–24
–24
–24 mA
IOL
Low-level output current
24
24
24 mA
∆t/∆v Input transition rise or fall rate
VCC = 1.5 V to 3 V
VCC = 3.6 V to 5.5 V
50
50
50
ns
20
20
20
NOTE 4: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
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