The SN74ALS666DWE4 is an 8-bit D-type transparent latch designed for storing input data and providing read-back capabilities. It features 3-state outputs, making it suitable for bus-structured applications. The latch operates with true outputs, following the data inputs when the latch enable (LE) is high. The device includes preset and clear inputs, as well as output-enable inputs (OE1 and OE2) that place the outputs in a high-impedance state when activated. Read-back functionality is facilitated through the read-back control (OERB) input, allowing the stored data to be sent back onto the input data bus. The SN74ALS666 is characterized for operation within a temperature range of 0¬8C to 70¬8C and is available in plastic small-outline (DW) and standard plastic (NT) 300-mil DIP packages.
Octal D-Type Transparent Read-Back Latches With 3-State Outputs 24-SOIC 0 to 70
D-Type Transparent Latch 1 Channel 8:8 IC Tri-State 24-SOIC
Win Source Part Number: 1257352-SN74ALS666DW
Category: Integrated Circuits (ICs)>Logic - Latches
Series: 74ALS
Package: Tube
Standard Package: 25
Mounting: SMD (SMT)
Logic Type: D-Type Transparent Latch
Output Type: Tri-State
Current - Output High, Low: 400µA, 8mA
Independent Circuits: 1
Delay Time - Propagation: 6ns
Voltage - Supply: 4.5V ~ 5.5V
Package / Case: 24-SOIC (0.295", 7.50mm Width)
Supplier Device Package: 24-SOIC
Temperature Range - Operating: 0°C ~ 70°C
ECCN: EAR99
Fake Threat In the Open Market: 60 pct.
MSL Level: 1 (Unlimited)
REACH Status: REACH Unaffected
HTSUS: 8542.39.0001
Mfr: Texas Instruments
Base Product Number: 74ALS666
IC D-TYPE TRANSP SGL 8:8 24SOIC
D-Type Transparent Latch 1 Channel 8:8 IC Tri-State 24-SOIC
IC LATCH TRANSP D 8BIT 24-SOIC
| Texas Instruments | DigiKey | Win Source Electronics | Shenzhen Shengyu Electronics Technology Limited | Quarktwin Technology Ltd. | Lingto Electronic Limited | |
|---|---|---|---|---|---|---|
| Product Category | Logic Latches | Logic Latches | Logic Latches | Logic Latches | Logic Latches | Logic Latches |
| Product Number | SN74ALS666DWE4 | SN74ALS666DWE4-ND | 1257352-SN74ALS666DWE4 | SN74ALS666DWE4 | SN74ALS666DWE4 | SN74ALS666DWE4 |
| Product Name | SN74ALS666 Octal D-Type Transparent Read-Back Latches With 3-State Outputs | Latches | Integrated Circuits (ICs) - Logic - Latches | Integrated Circuits (ICs) - Logic - Latches | Latches | Logic - Latches |
| Output Characteristics | 3-State | 3-State | ||||
| Supply Voltage | 5V; 5 | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | ||
| Operating Current | 73 mA | |||||
| Propagation Delay | 18 ns | 6 ns | 6 ns | 6 ns | ||
| Operating Temperature | 0 to 70 C (32 to 158 F) | 0 to 70 C (32 to 158 F) | 0 to 70 C (32 to 158 F) | 0 to 70 C (32 to 158 F) |
