MC74HC161ADR2 ON Semiconductor, MC74HC161ADR2 Datasheet - Page 12

• Manufacturer Part Number: MC74HC161ADR2
• Description: IC COUNTER 4BIT PRESET 16SOIC
• Manufacturer: ON Semiconductor
• Series: 74HCr

Specifications of MC74HC161ADR2

• Logic Type: Binary Counter
• Direction: Up
• Number Of Elements: 1
• Number Of Bits Per Element: 4
• Reset: Asynchronous
• Timing: Synchronous
• Count Rate: 167MHz
• Trigger Type: Positive Edge
• Voltage - Supply: 2 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: MC74HC161ADR2OSTR

H = COUNT
L = DISABLE
H = COUNT
L = DISABLE
ENABLE P
ENABLE T
CLOCK
CLOCK
RESET
RESET
LOAD
LOAD
NOTE: When used in these cascaded configurations the clock f
depend on number of stages. This limitation is due to set up times between Enable (Port) and Clock.
LOAD P0 P1 P2 P3
ENABLE P
ENABLE T
LOAD P0 P1 P2 P3
ENABLE P
ENABLE T
CLOCK
R
CLOCK
R
Q0 Q1 Q2 Q3
Q0 Q1 Q2 Q3
OUTPUTS
INPUTS
OUTPUTS
INPUTS
RIPPLE
CARRY
RIPPLE
CARRY
OUT
OUT
Figure 14. N−Bit Synchronous Counters
TYPICAL APPLICATIONS CASCADING
Figure 15. Nibble Ripple Counter
http://onsemi.com
LOAD P0 P1 P2 P3
ENABLE P
ENABLE T
LOAD P0 P1 P2 P3
ENABLE P
ENABLE T
CLOCK
R
CLOCK
R
Q0 Q1 Q2 Q3
Q0 Q1 Q2 Q3
12
OUTPUTS
INPUTS
OUTPUTS
max
INPUTS
RIPPLE
CARRY
RIPPLE
CARRY
OUT
guaranteed limits may not apply. Actual performance will
OUT
LOAD P0 P1 P2 P3
ENABLE P
ENABLE T
LOAD P0 P1 P2 P3
ENABLE P
ENABLE T
CLOCK
R
CLOCK
R
Q0 Q1 Q2 Q3
Q0 Q1 Q2 Q3
OUTPUTS
INPUTS
OUTPUTS
INPUTS
RIPPLE
CARRY
RIPPLE
CARRY
OUT
OUT
SIGNIFICANT
SIGNIFICANT
TO MORE
TO MORE
STAGES
STAGES