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Renesas
Renesas Electronics
Description : Dual 4-BIT BINARY COUNTERS

Dual 4-BIT BINARY COUNTERS

This circuit contains eight master-slave flip-flops and additional gating to implement two individual four-BIT COUNTERS.
The HD74LS393 comprises two independent four-BIT BINARY COUNTERS each having a clear and a clock input.
N-BIT BINARY counter can be implemented with each package providing the capability of divide-by-258.

ON-Semiconductor
ON Semiconductor
Description : BCD DECADE COUNTERS/4-BIT BINARY COUNTERS

BCD DECADE COUNTERS/4-BIT BINARY COUNTERS

The LS160A/161A/162A/163A are high-speed 4-BIT synchronous COUNTERS. They are edge-triggered, synchronously presettable, and cascadable MSI building blocks for counting, memory addressing, frequency division and other applications. The LS160A and LS162A count modulo 10 (BCD). The LS161A and LS163A count modulo 16 (BINARY.)

• Synchronous Counting and Loading
• Two Count Enable Inputs for High Speed Synchronous Expansion
• Terminal Count Fully Decoded
• Edge-Triggered Operation
• Typical Count Rate of 35 MHz
• ESD > 3500 Volts

Part Name(s) : CD4020BCCW
Fairchild
Fairchild Semiconductor
Description : 14-Stage Ripple Carry BINARY COUNTERS12-Stage Ripple Carry BINARY COUNTERS • 14-Stage Ripple Carry BINARY COUNTERS

General Description
The CD4020BC, CD4060BC are 14-stage ripple carry BINARY COUNTERS, and the CD4040BC is a 12-stage ripple carry BINARY counter. The COUNTERS are advanced one count on the negative transition of each clock pulse. The COUNTERS are reset to the zero state by a logical “1” at the reset input independent of clock.

Features
■ Wide supply voltage range: 1.0V to 15V
■ High noise immunity: 0.45 VDD (typ.)
■ Low power TTL compatibility: Fan out of 2 driving 74L or 1 driving 74LS
■ Medium speed operation: 8 MHz typ. at VDD = 10V
■ Schmitt trigger clock input

Description : PRESETTABLE BCD/DECADE UP/DOWN COUNTERS PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERS

PRESETTABLE BCD/DECADE UP/DOWN COUNTERS
PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERS

The SN54/74LS190 is a synchronous UP/DOWN BCD Decade (8421) Counter and the SN54/74LS191 is a synchronous UP/DOWN Modulo-16 BINARY Counter. State changes of the COUNTERS are synchronous with the LOW-to-HIGH transition of the Clock Pulse input.
An ASYNCHRONOUS Parallel Load (PL) input overrides counting and loads the data present on the Pn inputs into the flip-flops, which makes it possible to use the circuits as programmable COUNTERS. A Count Enable (CE) input serves as the carry /borrow input in multi-stage COUNTERS. An Up/Down Count Control (U/D) input determines whether a circuit counts up or down. A Terminal Count (TC) output and a Ripple Clock (RC) output provide overflow/underflow indication and make possible a variety of methods for generating carry/borrow signals in multistage counter applications.

• Low Power . . . 90 mW Typical Dissipation
• High Speed . . . 25 MHz Typical Count Frequency
• Synchronous Counting
ASYNCHRONOUS Parallel Load
• Individual Preset Inputs
• Count Enable and Up/Down Control Inputs
• Cascadable
• Input Clamp Diodes Limit High Speed Termination Effects

Hitachi
Hitachi -> Renesas Electronics
Description : Dual 4-BIT BINARY COUNTERS

This circuit contains eight master-slave flip-flops and additional gating to implement two individual four-BIT COUNTERS. The HD74LS393 comprises two independent four-BIT BINARY COUNTERS each having a clear and a clock input.






 


Fairchild
Fairchild Semiconductor
Description : Synchronous 4-BIT BINARY COUNTERS

General Description
These synchronous, presettable COUNTERS feature an internal carry look-ahead for application in high-speed counting designs. They are 4-BIT BINARY COUNTERS. The carry output is decoded by means of a NOR gate, thus preventing spikes during the normal counting mode of operation. 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 which are normally associated with ASYNCHRONOUS (ripple clock) COUNTERS. A buffered clock input triggers the four flip-flops on the rising (positivegoing) edge of the clock input waveform.

Features
■ Synchronously programmable
■ Internal look-ahead for fast counting
■ Carry output for n-BIT cascading
■ Synchronous counting
■ Load control line
■ Diode-clamped inputs

Description : Dual 4-BIT BINARY COUNTERS

Dual 4-BIT BINARY COUNTERS

Description : BCD DECADE COUNTERS / 4-BIT BINARY COUNTERS

The LS160A/161A/162A/163A are high-speed 4-BIT synchronous COUNTERS. They are edge-triggered, synchronously presettable, and cascadable MSIbuilding blocks for counting, memory addressing,frequency division and otherapplications. The LS160Aand LS162A count modulo 10 (BCD). The LS161A and LS163A count modulo 16 (BINARY.)





TheLS160A and LS161A have an ASYNCHRONOUS Master Reset (Clear) inputthat overrides, and is independent of, the clock and all other control inputs.The LS162A and LS163A have a Synchronous Reset (Clear) input that overridesall other control inputs, but is activeonly during the rising clock edge.



74LS163, 74LS16374LS160A, 74LS161A, 74LS162A, 74LS163A


INTE-ElectronicGRAL
Integral Corp.
Description : Synchronous 4 BIT COUNTERS; BINARY, Direct Reset

Synchronous 4 BIT COUNTERS; BINARY, Direct Reset

This synchronous, presettable counter features an internal carry look-ahead for application in high-speed counting designs. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change conicident 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. A buffered clock input triggers the four flip-flops on the rising (positive-going) edge of the clock input wave form.

• Internal Look-Ahead for Fast Counting
• Carry Output for n-BIT Cascading
• Synchronous Counting
• Synchronously Programmable
• Load Control Line
• Diode-Clamped Inputs

IKSEMICON
IK Semicon Co., Ltd
Description : Synchronous 4 BIT COUNTERS; BINARY, Direct Reset

Synchronous 4 BIT COUNTERS; BINARY, Direct Reset

This synchronous, presettable counter features an internal carry look-ahead for application in high-speed counting designs. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change conicident 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. A buffered clock input triggers the four flip-flops on the rising (positive-going) edge of the clock input wave form.

• Internal Look-Ahead for Fast Counting
• Carry Output for n-BIT Cascading
• Synchronous Counting
• Synchronously Programmable
• Load Control Line
• Diode-Clamped Inputs

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