DESCRIPTION

· The 74HC163-Q100 and 74HCT163-Q100 are synchronous presettable 4-bit binary counters with internal look-ahead carry.

· Synchronous operation is achieved by clocking all flip-flops simultaneously on the positive edge of the clock (CP).

· Outputs (Q0 to Q3) can be preset to HIGH or LOW. A LOW at the parallel enable input (PE) disables counting and loads data inputs (D0 to D3) on the clock's positive edge.

· A LOW at the master reset input (MR) resets Q0 to Q3 LOW on the next clock positive transition, regardless of PE, CET, and CEP levels.

· The look-ahead carry feature simplifies serial cascading of counters.

· Both CEP and CET must be HIGH for counting. CET enables the terminal count output (TC), which produces a HIGH pulse for cascading.

· Inputs include clamp diodes, allowing current limiting resistors for interfacing with voltages exceeding VCC.

FEATURES

· Qualified to AEC-Q100 (Grade 1) for automotive applications.

· Operating temperature range: -40°C to +85°C and -40°C to +125°C.

· Complies with JEDEC standard no. 7A.

· Input levels: CMOS for 74HC163, TTL for 74HCT163.

· Synchronous counting and loading with two count enable inputs for n-bit cascading.

· Synchronous reset and positive-edge triggered clock.

· ESD protection: MIL-STD-883 (2000 V), HBM JESD22-A114F (2000 V), MM JESD22-A115-A (200 V).

· Multiple package options available.

APPLICATIONS

· Suitable for automotive electronics due to AEC-Q100 qualification.

· Ideal for synchronous counting and cascading in digital systems.

· Used in applications requiring preset and reset functionalities.

· Effective in systems needing look-ahead carry for high-speed counting.

· Applicable in environments requiring robust ESD protection.