Features
• Onboard Oscillator
• Common Reset
• Negative-Edge Clocking
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55oC to 125oC
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC
at VCC = 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
VIL= 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il ≤ 1μA at VOL, VOH

Description
The ’HC4060 and ’HCT4060 each consist of an oscillator
section and 14 ripple-carry binary counter stages. The
oscillator configuration allows design of either RC or crystal
oscillator circuits. A Master Reset input is provided which
resets the counter to the all-0’s state and disables the
oscillator. A high level on the MR line accomplishes the reset
function. All counter stages are master-slave flip-flops. The
state of the counter is advanced one step in binary order on
the negative transition of φI (and φO). All inputs and outputs
are buffered. Schmitt trigger action on the input-pulse-line
permits unlimited rise and fall times.
In order to achieve a symmetrical waveform in the oscillator
section the HCT4060 input pulse switch points are the same
as in the HC4060; only the MR input in the HCT4060 has
TTL switching levels.