TC74VHC4040FT集成电路（IC）的计数器除法器规格书PDF中文资料

The TC74VHC4040 is an advanced high speed CMOS 12-

STAGE BINARY COUNTER / DIVIDER fabricated with

silicon gate CMOS technology.

It achieves the high speed operation similar to equivalent

Bipolar Schottky TTL while maintaining the CMOS low

power dissipation.

Setting CLR to high resets the counter to low.

A negative transition on the CK input brings one increment

into the counter.

This counter provides all divided output stages, and at Q12, a

1/4096 divided frequency will be output.

An input protection circuit ensures that 0 to 7V can be

applied to the input pins without regard to the supply

voltage. This device can be used to interface 5V to 3V

systems and two supply systems such as battery back up.

This circuit prevents device destruction due to mismatched

supply and input voltages.

FEATURES:

.

High Speed...

.*MAX=210MHz (typ.)

at Vcc=5V

lcc=4uA (Max.) at Ta = 25°C

• Low Power Dissipation.

• High Noise Immunity........... .VNIH VNIL = 28 Vcc (Min.)

• Power Down Protection is provided on all inputs.

• Balanced Propagation DelaystpLH=tpHL

• Wide Operating Voltage Range...Vcc (opr) = 2V-5.5V

• Low Noise

=

VOLP 1.5V (Max.)

• Pin and Function Compatible with 74HC4040