Octal D-Type Edge-Triggered Flip-Flops with 3-State Outputs The SN74ALS574B is a high-speed octal D-type flip-flop manufactured by Texas Instruments. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Texas Instruments (TEXAS)
- **Logic Family:** ALS (Advanced Low-Power Schottky)
- **Logic Type:** D-Type Flip-Flop
- **Number of Bits:** 8 (Octal)
- **Output Type:** Tri-State
- **Supply Voltage (VCC):** 4.5V to 5.5V
- **High-Level Input Voltage (VIH):** 2.0V (min)
- **Low-Level Input Voltage (VIL):** 0.8V (max)
- **High-Level Output Voltage (VOH):** 2.5V (min) @ IOH = -2.6mA
- **Low-Level Output Voltage (VOL):** 0.5V (max) @ IOL = 24mA
- **Propagation Delay Time (tpd):** 12ns (max) at 5V
- **Operating Temperature Range:** 0°C to 70°C
- **Package Type:** 20-pin PDIP, SOIC, or other variants
### **Descriptions:**
- The SN74ALS574B is an octal edge-triggered D-type flip-flop with 3-state outputs.
- It features a common clock (CLK) and output enable (OE) control for all eight flip-flops.
- Data is transferred from the D inputs to the Q outputs on the positive edge of the clock pulse.
- The outputs are in a high-impedance state when the output enable (OE) is high.
### **Features:**
- **High-Speed Operation:** Optimized for speed with typical propagation delays of 12ns.
- **Tri-State Outputs:** Allows bus-oriented applications.
- **Edge-Triggered Clocking:** Ensures reliable data transfer.
- **Wide Operating Voltage Range:** Supports standard 5V TTL logic levels.
- **Low Power Consumption:** ALS technology reduces power dissipation compared to standard TTL.
- **20-Pin Package Options:** Available in PDIP, SOIC, and other industry-standard packages.
This information is strictly based on the manufacturer's datasheet and technical documentation.
