Catalog > Semiconductors > IC - Voltage Regulators 74ALS191 Counters 4-Bit Synchronous Up/Down Binary Counters 16Pin Part No: 74ALS191 14.38 ZAR inc for 1 Each (Quoting) Add to Cart Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications Logic Type Binary Counter Direction Up, Down Number of Elements 1 Number of Bits per Element 4 Reset - Timing Synchronous Count Rate 30 MHz Trigger Type Positive Edge Voltage - Supply 4.5 V ~ 5.5 V Operating Temperature 0°C ~ 70°C Mounting Type Through Hole Package / Case 16-DIP (0.300", 7.62mm) Supplier Device Package 16-PDIP