74AC191SC

Output Type :
Package / Case : SOIC-16
Maximum Operating Temperature : + 85 C
Minimum Operating Temperature : - 40 C
Number of Circuits : 1
Logic Type : CMOS
Packaging : Tube
Counter Type : Binary
Number of Input Lines : 4
Counting Sequence : Up/Down
Logic Family : 74AC
Propagation Delay Time : 15 ns, 11 ns


Features:

I_CC reduced by 50%
High speed-133 MHz typical count frequency
Synchronous counting
Asynchronous parallel load
Cascadable
Outputs source/sink 24 mA


Pinout




Specifications

Supply Voltage (V_CC).................. −0.5V to +7.0V
DC Input Diode Current (I_IK)
    V_I = −0.5V ......................................... −20 mA
    V_I = VCC + 0.5V................................. +20 mA
DC Input Voltage (V_I) .........−0.5V to V_CC + 0.5V
DC Output Diode Current (I_OK)
    V_O = −0.5V........................................  −20 mA
    V_O = V_CC + 0.5V +20 mA
DC Output Voltage (V_O) ......−0.5V to V_CC + 0.5V
DC Output Source
    or Sink Current (I_O)............................ ±50 mA
DC V_CC or Ground Current
    per Output Pin (I_CC or I_GND)............... ±50 mA
Storage Temperature (T_STG)... −65°C to +150°C
Junction Temperature (T_J)
    PDIP ......................................................140°C  


Description

The 74AC191SC is a reversible modulo 16 binary counter. It features synchronous counting and asynchronous presetting. The preset feature allows the AC191 to be used in programmable dividers. The Count Enable input, the Terminal Count output and the Ripple Clock output make possible a variety of methods of implementing multistage counters. In the counting modes, state changes are initiated by the rising edge of the clock.

Parameters:

Technical/Catalog Information	74AC191SC
Vendor	Fairchild Semiconductor
Category	Integrated Circuits (ICs)
Logic Type	Binary Counter
Trigger Type	Positive Edge
Voltage - Supply	2 V ~ 6 V
Number of Bits per Element	4
Number of Elements	1 - Single
Direction	Up, Down
Mounting Type	Surface Mount
Package / Case	16-SOIC
Reset	-
Packaging	Tube
Operating Temperature	-40°C ~ 85°C
Count Rate	133MHz
Timing	Synchronous
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	74AC191SC 74AC191SC