* s Counts binary s Single down/up count control line s Count enable control input s Ripple clock output for cascading s Asynchronously presettable with load control s Parallel outputs s Cascadable for n-bit applications s Average propagation delay 20 ns s Typical clock frequency 25 MHz s Typical powe
74LS191
Fairchild Semiconductor
72.74 KB
Synchronous 4-bit up/down counter.
DM74LS191 Synchronous 4-Bit Up/Down Counter with Mode Control
August 1986 Revised February 1999
DM74LS191 Synchronous 4-Bit Up/Down Counter with Mod.
📁 Related Datasheet
74LS190 - Synchronous Up/Down Decade Counters
(Hitachi Semiconductor)
19.20 20.00 Max 16 9 7.40 Max 6.30
Unit: mm
1 1.3
1.11 Max
8
0.51 Min
2.54 Min 5.06 Max
7.62
2.54 ± 0.25
0.48 ± 0.10
0.25 – 0.05 0° – 15°
Hit.
74LS190 - PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERS
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74LS190 - Synchronous Up/Down Counter
(Texas Instruments)
SN54190, SN54191, SN54LS190, SN54LS191,
SN74190, SN74191, SN74LS190, SN74LS191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL
SDLS072 – DECEMB.
74LS191 - PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERS
(Motorola)
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74LS191 - Synchronous Up/Down 4-bit Binary Counters
(Hitachi Semiconductor)
19.20 20.00 Max 16 9 7.40 Max 6.30
Unit: mm
1 1.3
1.11 Max
8
0.51 Min
2.54 Min 5.06 Max
7.62
2.54 ± 0.25
0.48 ± 0.10
0.25 – 0.05 0° – 15°
Hit.
74LS191 - Synchronous Up/Down Counters
(Texas Instruments)
SN54190, SN54191, SN54LS190, SN54LS191,
SN74190, SN74191, SN74LS190, SN74LS191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL
SDLS072 – DECEMB.
74LS192 - PRESETTABLE BCD/DECADE UP/DOWN COUNTER
(HITACHI)
19.20 20.00 Max 16 9 7.40 Max 6.30
Unit: mm
1 1.3
1.11 Max
8
0.51 Min
2.54 Min 5.06 Max
7.62
2.54 ± 0.25
0.48 ± 0.10
0.25 – 0.05 0° – 15°
Hit.
74LS192 - PRESETTABLE BCD/DECADE UP/DOWN COUNTER
(ON Semiconductor)
PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER
The SN54/74LS192 is an UP/DOWN BCD Decade (8421) Counter and the SN54/.
