Synchronous 4-Bit Up/Down Binary Counters With 3-State Outputs

The SN74ALS568A decade Counter and ?ALS569A binary Counters are programmable, count up or down, and offer both synchronous and asynchronous clearing. All synchronous functions are executed on the positive-going edge of the Clock (CLK) input.
The clear function is initiated by applying a low level to either asynchronous clear (ACLR) or synchronous clear (SCLR). Asynchronous (direct) clearing overrides all other functions of the device, while synchronous clearing overrides only the other synchronous functions. Data is loaded from the A, B, C, and D inputs by holding load () low during a positive-going Clock transition. The counting function is enabled only when enable P (ENP) and enable T (ENT) are low and ACLR, SCLR, and are high. The up 1a03 /down (U/D) input controls the direction of the count. These Counters count up when U/D is high and count down when U/D is low.
A high level at the output-enable () input forces the Q outputs into the high-impedance state, and a low level enables those outputs. Counting is independent of . ENT is fed forward to enable the ripple-carry output (RCO) to produce a low-level pulse while the count is zero (all Q outputs low) when counting down or maximum (9 or 15) when counting up. The clocked carry output (CCO) produces a low-level pulse for a duration equal to that of the low level of the Clock when is low and the Counter is enabled (both ENP and ENT are low); otherwise, CCO is high. CCO does not have the glitches commonly associated with a ripple-carry output. Cascading is normally accomplished by connecting or CCO of the first Counter to ENT of the next Counter However, for very high-speed counting, should be used for cascading since CCO does not become active until the Clock returns to the low level.
The SN54ALS569A is characterized for operation over the full military temperature range of -55?C to 125?C. The SN74ALS568A and SN74ALS569A are characterized for operation from 0?C to 70?C.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
SN74ALS569ADWR Texas Instruments Synchronous 4-Bit Up/Down Binary Counters With 3-State Outputs 20-SOIC 0 to 70
SN74ALS569ADWG4 Texas Instruments ALS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO20, GREEN, PLASTIC, SOIC-20
SN74ALS569ADWRG4 Texas Instruments ALS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO20, GREEN, PLASTIC, SOIC-20
SN74ALS569AN Texas Instruments Synchronous 4-Bit Up/Down Binary Counters With 3-State Outputs 20-PDIP 0 to 70
SN74ALS569ANE4 Texas Instruments Synchronous 4-Bit Up/Down Binary Counters With 3-State Outputs 20-PDIP 0 to 70
SN74ALS569ANSRE4 Texas Instruments ALS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO20, GREEN, PLASTIC, SOP-20
SN74ALS569ANSR Texas Instruments ALS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO20, GREEN, PLASTIC, SOP-20
SN74ALS569ADWRE4 Texas Instruments ALS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO20, GREEN, PLASTIC, SO-20
SN74ALS569ADW Texas Instruments ALS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO20, PLASTIC, SO-20
SN74ALS569ANSRG4 Texas Instruments ALS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL DECADE COUNTER, PDSO20, GREEN, PLASTIC, SOP-20
SN74ALS569A 's PackagesSN74ALS569A 's pdf datasheet
SN74ALS569ADW SOIC
SN74ALS569ADWE4 SOIC
SN74ALS569ADWG4 SOIC
SN74ALS569ADWR SOIC
SN74ALS569ADWRE4 SOIC
SN74ALS569ADWRG4 SOIC
SN74ALS569AN PDIP
SN74ALS569ANE4 PDIP
SN74ALS569ANSR SO
SN74ALS569ANSRE4 SO
SN74ALS569ANSRG4 SO




SN74ALS569A Pinout, Pinouts
SN74ALS569A pinout,Pin out
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