74ALS651 Datasheet – Transceiver / Register IC
74ALS651 overview
The 74ALS651 is a Transceiver / Register made by Philips Electronics - NXP, supplied in these packages: DIP, SOP 24 Pin Type. The absolute maximum ratings table on this page lists the 6 limits from the manufacturer's datasheet that must not be exceeded. This page brings together the 74ALS651 pinout and maximum ratings, with the full datasheet PDF to preview below or download.
The 74LAS651 and 74ALS652 transceivers/registers consist of bus transceiver circuits with 3-State outputs, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or the internal registers. Data on the A or B bus will be clocked into the registers as the appropriate clock pin goes High. Output enable (OEAB, OEBA) and select (SAB, SBA) pins are provided for bus management. The 74LAS651-1 and 74ALS652-1 will sink 48mA if the VCC is limited to 5.0V ± 0.25V.
Datasheet
74ALS651 features
- Independent registers for A and B buses
- Multiplexed real-time and stored data
- Choice of non-inverting and inverting data paths
- 3-State outputs
- The -1 versions sinks 48mA IOL within the ±5% VCC range
74ALS651 pinout
| Name | Description |
|---|---|
| A0 – A7 | A inputs |
| B0 – B7 | B inputs |
| CPAB | A-to-B clock input |
| CPBA | B-to-A clock input |
| SAB | A-to-B select input |
| SBA | B-to-A select input |
| OEAB | A-to-B output enable input |
| OEBA | B-to-A output enable input |
| A0 – A7, B0 – B7 | A, B outputs |
| A0 – A7, B0 – B7 | A, B outputs (-1 version) |
Absolute maximum ratings
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Supply voltage | VCC | –0.5 to +7.0 | V |
| Input voltage | VIN | –0.5 to +7.0 | V |
| Input current | IIN | –30 to +5 | mA |
| Voltage applied to output in High output state | VOUT | –0.5 to VCC | V |
| Operating free-air temperature range | Tamb | 0 to +70 | °C |
| Storage temperature range | Tstg | –65 to +150 | °C |
74ALS651 applications
- Bus Transceiver
- Data Communication
- Buffer Amplifier
- Logic Level Conversion
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