Texas Instruments SN74ALS561ADW Counters and Dividers
Synchronous 4-bit up/down binary counter, positive edge triggered, featuring 3-state outputs.

Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
SN74ALS561ADW
Series
Base Model
Detailed Description
Synchronous 4-bit up/down binary counter, positive edge triggered, featuring 3-state outputs. Operates with a maximum frequency of 30MHz and a propagation delay of 18ns. This integrated circuit supports both asynchronous and synchronous reset functions. Packaged in a 20-pin SOIC for surface mounting, it functions within a supply voltage range of 4.5V to 5.5V and an operating temperature range of 0°C to 70°C.
Package
SOIC
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
SN74ALS561ADW Datasheet
Quick Jump:
Technical Specifications
Texas Instruments SN74ALS561ADW Counters and Dividers technical specifications.
General
Series
74ALS
RoHS
Yes
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 70°C
Supply Voltage
4.5V ~ 5.5V
Package
SOIC
Clock Edge Trigger Type
Positive Edge
Direction
Down
Frequency
30MHz
Logic Function
Counter
Alternate Parts Comparison (SN74ALS561ADW vs SN74ALS153DR vs SN74ALS156DR vs SN74ALS03BDR)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C |
| Supply Voltage | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Package / Case | -- | 16-SOIC | 16-SOIC | 14-SOIC |
| Current Output High Low | -- | 2.6mA, 24mA | 100µA, 8mA | -, 8mA |
| Action |
Texas Instruments SN74ALS561ADW Counters and Dividers Overview
Synchronous 4-bit up/down binary counter, positive edge triggered, featuring 3-state outputs. Operates with a maximum frequency of 30MHz and a propagation delay of 18ns. This integrated circuit supports both asynchronous and synchronous reset functions. Packaged in a 20-pin SOIC for surface mounting, it functions within a supply voltage range of 4.5V to 5.5V and an operating temperature range of 0°C to 70°C.
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