| Parameters |
| Factory Lead Time |
6 Weeks |
| Lifecycle Status |
ACTIVE (Last Updated: 4 days ago) |
| Mount |
Through Hole |
| Mounting Type |
Through Hole |
| Package / Case |
20-DIP (0.300, 7.62mm) |
| Number of Pins |
20 |
| Weight |
1.1991g |
| Operating Temperature |
0°C~70°C TA |
| Packaging |
Tube |
| Series |
74ALS |
| JESD-609 Code |
e4 |
| Pbfree Code |
yes |
| Part Status |
Active |
| Moisture Sensitivity Level (MSL) |
1 (Unlimited) |
| Number of Terminations |
20 |
| Termination |
Through Hole |
| ECCN Code |
EAR99 |
| Terminal Finish |
Nickel/Palladium/Gold (Ni/Pd/Au) |
| Additional Feature |
WITH DIRECTION CONTROL |
| Subcategory |
Bus Driver/Transceiver |
| Technology |
TTL |
| Voltage - Supply |
4.5V~5.5V |
| Terminal Position |
DUAL |
| Number of Functions |
1 |
| Supply Voltage |
5V |
| Terminal Pitch |
2.54mm |
| Base Part Number |
74ALS639 |
| Pin Count |
20 |
| Output Type |
Open Collector, Push-Pull |
| Operating Supply Voltage |
5V |
| Number of Elements |
1 |
| Polarity |
Inverting, Non-Inverting |
| Power Supplies |
5V |
| Number of Channels |
8 |
| Load Capacitance |
50pF |
| Number of Ports |
2 |
| Number of Bits |
8 |
| Propagation Delay |
30 ns |
| Quiescent Current |
33mA |
| Turn On Delay Time |
35 ns |
| Family |
ALS |
| Logic Function |
Inverting, Transceiver |
| Direction |
Bidirectional |
| Output Characteristics |
3-STATE |
| Current - Output High, Low |
- 24mA; 15mA 24mA |
| Logic Type |
Transceiver, Non-Inverting |
| Max I(ol) |
0.024 A |
| Control Type |
COMMON CONTROL |
| Power Supply Current-Max (ICC) |
50mA |
| Translation |
N/A |
| Height |
5.08mm |
| Length |
24.33mm |
| Width |
6.35mm |
| Thickness |
4.57mm |
| Radiation Hardening |
No |
| REACH SVHC |
No SVHC |
| RoHS Status |
ROHS3 Compliant |
| Lead Free |
Lead Free |
SN74ALS639AN Overview
Logical driver uses a neat 20-DIP (0.300, 7.62mm) package. Tube external packaging. Available in Through Hole. Voltage buffer adopts Transceiver, Non-Inverting logic prototype. Buffer IC is fed with a voltage of 4.5V~5.5V. Qualified to operate within 0°C~70°C TA. The high and low logic state output current of logical driver is - 24mA; 15mA 24mA. Logical driver can deal with Open Collector, Push-Pull output (s). All of the 1 elements are put into use. Digital buffer is one of the 74ALS series devices. 20 terminations with different functions. Buffer IC reuqires a supply voltage of 5V. ALS family part. 20 pins are set with the electric part. Buffer IC is suitable for Through Hole applications. Logical driver has 20 pins. Enhanced with 2 ports. You can search "74ALS639" for other related electrical components. Specifically, digital transciever is a kind of Bus Driver/Transceiver. The digital buffer starts up under COMMON CONTROL control technology. In quiescent state, the electronic part uses 33mA. It is recommended to use a 5V power supply. To run the part safely and stably in a circuit, 5V recommends users apply 5V on the logical driver. 8 bits are included within the electrical component. Logical driver features WITH DIRECTION CONTROL to better serve the need. 8 channels for high quality communication.
SN74ALS639AN Features
Bus Driver/Transceiver
WITH DIRECTION CONTROL
SN74ALS639AN Applications
There are a lot of Texas Instruments SN74ALS639AN Buffers & Transceivers applications.
- Optical sub-assembly (OSA)
- Wireless HD Photography
- Fiber distributed data interface (FDDI)
- WDM transmission
- Satellite radio receiver
- Fast Ethernet
- 1x/2x Fiber Channel
- Televisions
- AV receiver
- Thermal management