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Note: Please check the "Last Updated" date under the Part Number to make sure that you have the latest Data Sheet.

For Non-RoHS Packages, please contact the factory for availability.

8/6 Decade Up Counter with 8 Decade Latch…. (40 Pins)
LS7030
Last Updated: 01/27/03
LS7031
Last Updated: 01/27/03
10MHz Count Frequency
Multiplexed BCD and 7-Segment (LS7030) data outputs
Leading Zero Blanking output
On-chip Scan Oscillator
Decimal Point and Overflow control inputs

The LS7031 can latch external prescalers into
the two LSD latches for counting to 1 GHz

4.75V to 15V operation
 
6 Decade Pre-Determining Up/Down Counter…. (40 Pins)
LS7055; LS7056
Last Updated: 01/27/03
250 kHz Count Frequency
Fully Synchronous counting
Multiplexed BCD and 7 Segment data outputs
Preset, Presignal and Main Signal Storage Registers
Three Comparators with Output Flags
Thumbwheel interface for loading registers
On-chip Scan Oscillator
4.75V to 15V operation
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24-Bit Multi-Mode Counter…. (20 Pins)
LS7166, LS7166-S, LS7166-TS24
Last Updated: 12/15/08
25 MHz Count Frequency
8-Bit I/O bus
24-Bit Comparator
Programmable Count Modes: Quadrature (x1, x2, x4); Non-Quadrature, Normal/Modulo-N; 24 Hour Clock; Non-Recycle, Binary; BCD

TTL and CMOS compatible
3V to 5.5V operation
 
24-Bit x 2 Multi-Mode Counter…. (28 Pins)
LS7266R1, LS7266R1-S, LS7266R1-TS
Last Updated: 08/04/09
Up to 30MHz Count Frequency
8-Bit I/O bus
Dual 24-Bit Comparator
Programmable Count Modes: Quadrature (x1, x2, x4); Non-Quadrature, Normal/Modulo-N; Range Limit; Non-Recycle, Binary; BCD

TTL and CMOS compatible
3V to 5.5V operation
 
32-Bit Multi-Mode Counter with Serial Interface.. (14 Pins)
pdf LS7366R, LS7366R-S, LS7366R-TS
Last Updated: 06/18/14
Synchronous (SPI) serial interface.
Up to 40 Mhz Counting Frequency
32-bit Counter, Comparator, Input and Output Registers
Two 8-bit registers to program functional modes
8-bit instruction register and 8-bit status register
Programmable input for Counter Load
Output Register Load or Counter Reset
Modulo-N; Non-recycle; Range-limit or
Free Running modes of up/down counting
8-bit, 16-bit, 24-bit and 32-bit Programmable configuration
3V to 5.5V Operation
 
24-Bit x 4 Multi-Mode Counter.. (48 Pins)
LS7566R-TS
Last Updated: 07/21/08
Up to 40MHz Count Frequency
3-State Octal I/O Bus
Each of the four Binary Counters have independent Support Circuits:
Comparators, Registers, Latches, etc.
Programmable count modes include:
Quadrature (x1, x2, x4); Non-Quadrature (Up/Down); Free-Run, Non-Recycle, Modulo-N, Range-Limit
3V to 5.5V Operation
 
32-Bit Quadrature Counters....(24; 28; 38; 48 Pins)
LS7766SO, LS7766SO-S, LS7766SO-TS; LS7766SH-TS 1-Axis
LS7766DO, LS7766DO-S, LS7766DO-TS; LS7766DH-TS 2-Axis
Last Update:
06/01/12
Direct interface with Incremental Encoders
40MHz(5V). 20Mhz(3.3V) Quadrature Clock Frequency
Programmable I/Os for Index and Marker Flags
Separate mode-control registers for each axis
Sets of 32-bit counters,input registers, output registers, comparators and octal status registers for each axis
Digital filtering of input quadrature clocks
Pin selectable 3-state Hex / Octal bus
SD / DO = Single-axis / Dual-axes Octal I/O Bus
SH / DH = Single-axis / Dual-axes with pin selectable Hex / Octal I/O Bus
Programmable count modes include:
Quadrature (x1, x2, x4); Non-Quadrature (Up/Down);
Range Limit; Normal/Module-N; Non-Recycle
3V to 5.5V Operation
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