Product Summary

The SN74161N synchronous, presettable counter features an internal carry look-ahead for application in high-speed counting designs. The SN74161N is a 4-bit binary counter. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the count-enable inputs and internal gating. This mode of operation eliminates the output counting spikes that are normally associated with asynchronous (ripple clock) counters, however counting spikes may occur on the (RCO) ripple carry output. A buffered clock input triggers the four flip-flops on the rising edge of the clock input waveform.

Parametrics

SN74161N absolute maximum ratings: (1)Supply voltage, VCC: 7V; (2)Input voltage: 5.5V; (3)Interemitter voltage: 5.5V; (4)Operating free-air temperature range: 0 to 70℃; (5)storage temperature range: -65 to 150℃.

Features

SN74161N features: (1)Internal Look-Ahead for Fast Counting; (2)Carry Output for n-Bit Cascading; (3)Synchronous Counting; (4)Synchronously Programmable; (5)Load Control Line; (6)Diode-Clamped Inputs.

Diagrams

SN74161N circuit diagram

SN7400
SN7400
Other

Data Sheet
Negotiable 
SN7400D
SN7400D
Texas Instruments
Gates (AND / NAND / OR / NOR) Quad 2-input Positive-NAND gates
Data Sheet
0-1: $0.79
1-25: $0.71
25-100: $0.62
100-250: $0.55
SN7400DE4
SN7400DE4
Texas Instruments
Gates (AND / NAND / OR / NOR) Quad 2-input Positive-NAND gates
Data Sheet
0-1: $0.79
1-25: $0.64
25-100: $0.58
100-250: $0.51
SN7400DG4
SN7400DG4
Texas Instruments
Gates (AND / NAND / OR / NOR) Quad 2-input Pos- NAND
Data Sheet
0-1: $0.79
1-25: $0.71
25-100: $0.62
100-250: $0.55
SN7400DR
SN7400DR

IC QUAD 2IN POS-NAND GATE 14SOIC
Data Sheet
Negotiable 
SN7400DRE4
SN7400DRE4

IC QUAD 2IN POS-NAND GATE 14SOIC
Data Sheet
Negotiable