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SNJ54HC112 Datasheet, PDF (3/13 Pages) Texas Instruments – DUAL J-NEGATIVE-EDGE-TRIGGERED FLIP-FLOPS WITH CLEAR AND PRESET | |||
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SN54HC112, SN74HC112
DUAL JÄK NEGATIVEÄEDGEÄTRIGGERED FLIPÄFLOPS
WITH CLEAR AND PRESET
SCLS099F â DECEMBER 1982 â REVISED SEPTEMBER 2003
absolute maximum ratings over operating free-air temperature rangeâ
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . â0.5 V to 7 V
Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . â65°C to 150°C
â Stresses beyond those listed under âabsolute maximum ratingsâ 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 ârecommended operating conditionsâ is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 3)
SN54HC112
MIN NOM MAX
SN74HC112
UNIT
MIN NOM MAX
VCC Supply voltage
2
5
6
2
5
6V
VCC = 2 V
1.5
1.5
VIH High-level input voltage
VCC = 4.5 V
3.15
3.15
V
VCC = 6 V
4.2
4.2
VCC = 2 V
0.5
0.5
VIL
Low-level input voltage
VCC = 4.5 V
1.35
1.35 V
VCC = 6 V
1.8
1.8
VI
Input voltage
0
VCC
0
VCC V
VO
Output voltage
0
VCC
0
VCC V
VCC = 2 V
1000
1000
ttâ¡
Input transition (rise and fall) time
VCC = 4.5 V
500
500 ns
VCC = 6 V
400
400
TA
Operating free-air temperature
â55
125 â40
85 °C
â¡ If this device is used in the threshold region (from VILmax = 0.5 V to VIHmin = 1.5 V), there is a potential to go into the wrong state from induced
grounding, causing double clocking. Operating with the inputs at tt = 1000 ns and VCC = 2 V does not damage the device; however, functionally,
the CLK inputs are not ensured while in the shift, count, or toggle operating modes.
NOTE 3: 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.
⢠POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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