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MFG:TI Package Cooled:DIP
Part Number: 74ALS646
MFG: TI
Package Cooled: DIP
Description: The 74ALS646/74ALS646-1 and 74ALS648/74ALS648-1 transceivers/registers consist of bus transceiver circ...
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74ALS646
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DataSheet
General Description
74ALS646 General Description
The 74ALS646/74ALS646-1 and 74ALS648/74ALS648-1 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 (OE) and direction (DIR) and select (SAB, SBA) pins are provided for bus management.
The 74ALS646-1 and 74ALS648-1 will sink 48mA if the VCC is limited to 5.0V ±0.25V.
74ALS646 Maximum Ratings
| SYMBOL | PARAMETER | RATING | UNIT | |
| VCC | Supply voltage | 0.5 to +7.0 | V | |
| VIN | Input voltage | 0.5 to +7.0 | V | |
| IIN | Input current | 30 to +5 | mA | |
| VOUT | Voltage applied to output in high output state | 0.5 to VCC | V | |
| IOUT | Current applied to output in Low output state | All versions | 48 | mA |
| -1 version | 96 | mA | ||
| Tamb | Operating free-air temperature range | 0 to +70 | °C | |
| Tstg | Storage temperature range | 65 to +150 | °C | |
74ALS646 Features
Combines 74ALS245 and two 74ALS374 type functions in one chip
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 version sink 48mA IOL within the ±5% VCC range
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 version sink 48mA IOL within the ±5% VCC range
74ALS646 Connection Diagram
74ALS646-1
PDF/DataSheet Download
- Datasheet: 74ALS646-1
- File Size: 159378 KB
- Manufacturer: PHILIPS [Philips Semiconductors]
- Click here to Download
- ·74ABH16244ADGG
- PHILIPS [Philips Semiconductors]
- 16-bit buffer/line driver 3-State
- 77546 KB
- ·74ABH16244ADL
- PHILIPS [Philips Semiconductors]
- 16-bit buffer/line driver 3-State
- 77546 KB
- ·74ABT00
- PHILIPS [Philips Semiconductors]
- Quad 2-input NAND gate
- 97320 KB
- ·74ABT00D
- PHILIPS [Philips Semiconductors]
- Quad 2-input NAND gate
- 97320 KB
- ·74ABT00DB
- PHILIPS [Philips Semiconductors]
- Quad 2-input NAND gate
- 97320 KB
- ·74ABT00N
- PHILIPS [Philips Semiconductors]
- Quad 2-input NAND gate
- 97320 KB
- ·74ABT00PW
- PHILIPS [Philips Semiconductors]
- Quad 2-input NAND gate
- 97320 KB
- ·74ABT00PWDH
- PHILIPS [Philips Semiconductors]
- Quad 2-input NAND gate
- 97320 KB
74ALS646 Relative Products
74ALS645A-A
The 74ALS645A-A is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both transmit and receive directions. The device features an output enable (OE ) input for easy cascading and transmit/receive (R/T) input for direction contro...
74ALS645A-1
The 74ALS645A-1 is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both transmit and receive directions. The 74ALS645A-1 features an output enable (OE) input for easy cascading and transmit/receive (R/T) input for direction con...
74ALS645A
The 74ALS645A is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both transmit and receive directions. The device features an output enable (OE ) input for easy cascading and transmit/receive (R/T) input for direction control....
74ALS623A1
The 74ALS623A1 is octal transceiver featuring 3-State bus compatible outputs in both transmit and receive directions. The 74ALS620A is an inverting version of the 74ALS623A. The outputs are capable of sinking 24mA and sourcing up to 15mA, providing very good...
74ALS623A
The 74ALS620A and 74ALS623A are octal transceiver featuring 3-State bus compatible outputs in both transmit and receive directions. The 74ALS620A is an inverting version of the 74ALS623A. The outputs are capable of sinking 24mA and sourcing up to 15mA, provi...
74ALS620A1
The 74ALS620A1 is octal transceiver featuring 3-State bus compatible outputs in both transmit and receive directions. The 74ALS620A is an inverting version of the 74ALS623A. The outputs are capable of sinking 24mA and sourcing up to 15mA, providing very good...
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