Nexperia B.V. Presettable synchronous 4-bit binary counter; asynchronous reset 74LVC161D,118

The 74LVC161 is a synchronous presettable binary counter with an internal look-head carry. Synchronous operation is provided by having all flip-flops clocked simultaneously on the positive-going edge of the clock (CP). The outputs (Q0 to Q3) of the counters may be preset HIGH or LOW. A LOW at the parallel enable input (PE) disables the counting action and causes the data at the data inputs (D0 to D3) to be loaded into the counter on the positive-going edge of the clock. Preset takes place regardless of the levels at count enable inputs (CEP and CET). A LOW at the master reset input (MR) sets Q0 to Q3 LOW regardless of the levels at input pins CP, PE, CET and CEP (thus providing an asynchronous clear function). The look-ahead carry simplifies serial cascading of the counters. Both CEP and CET must be HIGH to count. The CET input is fed forward to enable the terminal count output (TC). The TC output thus enabled will produce a HIGH output pulse of a duration approximately equal to a HIGH output of Q0. This pulse can be used to enable the next cascaded stage.

Inputs can be driven from either 3.3 V or 5 V devices. This feature allows the use of these devices as translators in mixed 3.3 V and 5 V environments.

Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times.

Features and benefits

• Overvoltage tolerant inputs to 5.5 V
• Wide supply voltage range from 1.2 V to 3.6 V
• CMOS low power dissipation
• Direct interface with TTL levels
• Asynchronous reset
• Synchronous counting and loading
• Two count enable inputs for n-bit cascading
• Positive edge-triggered clock
• Complies with JEDEC standard:
• JESD8-7A (1.65 V to 1.95 V)
• JESD8-5A (2.3 V to 2.7 V)
• JESD8-C/JESD36 (2.7 V to 3.6 V)
• ESD protection:
• HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
• CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
• Specified from -40 °C to +85 °C and -40 °C to +125 °C

Binary Counter, LVC/LCX/Z Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS, PDSO16

Manufacturer: Nexperia USA Inc.
Win Source Part Number: 765638-74LVC161D,118
Series: 74LVC
Packaging: Reel package
Operating Temperature Range: -40°C ~ 125°C
Package: 16-SOIC (0.154", 3.90mm Width)
Mounting: SMD
Logic Type: Binary Counter
Operating Supply Voltage: 1.2 V ~ 3.6 V
Number of Elements: 1
Number of Bits per Element: 4
Direction: Up
Reset: Asynchronous
Timing: Synchronous
Count Rate: 150MHz
Family Name: 74LVC161
Categories: Integrated Circuits (ICs)
Manufacturer Package: 16-SO
Alternative Parts (Cross-Reference): 74LVC161ADC8; 74LVC161ADC; 74LVC161PW;
Introduction Date: August 23, 1996
ECCN: EAR99
Country of Origin: Thailand
Estimated EOL Date: 2027
Halogen Free: Compliant
Popularity: Medium
Fake Threat In the Open Market: 37 pct.
Supply and Demand Status: Limited

Counter IC Binary Counter 1 Element 4 Bit Positive Edge 16-SO

Counter IC Binary Counter 1 Element 4 Bit Positive Edge 16-SO

Counter IC Binary Counter 1 Element 4 Bit Positive Edge 16-SO