| Parameters |
| Mounting Type |
Through Hole |
| Package / Case |
20-DIP (0.300, 7.62mm) |
| Surface Mount |
NO |
| Operating Temperature |
0°C~70°C TA |
| Packaging |
Tube |
| Series |
74AS |
| JESD-609 Code |
e4 |
| Pbfree Code |
no |
| Part Status |
Obsolete |
| Moisture Sensitivity Level (MSL) |
3 (168 Hours) |
| Number of Terminations |
20 |
| Terminal Finish |
NICKEL PALLADIUM GOLD |
| Additional Feature |
WITH DIRECTION CONTROL |
| Technology |
TTL |
| Voltage - Supply |
4.5V~5.5V |
| Terminal Position |
DUAL |
| Peak Reflow Temperature (Cel) |
NOT SPECIFIED |
| Number of Functions |
1 |
| Supply Voltage |
5V |
| Terminal Pitch |
2.54mm |
| Reach Compliance Code |
unknown |
| Time@Peak Reflow Temperature-Max (s) |
NOT SPECIFIED |
| Pin Count |
20 |
| JESD-30 Code |
R-PDIP-T20 |
| Output Type |
Open Collector, Push-Pull |
| Number of Elements |
1 |
| Supply Voltage-Max (Vsup) |
5.5V |
| Supply Voltage-Min (Vsup) |
4.5V |
| Number of Ports |
2 |
| Family |
AS |
| Output Characteristics |
3-STATE |
| Current - Output High, Low |
- 64mA; 15mA 64mA |
| Logic Type |
Transceiver, Inverting |
| Output Polarity |
INVERTED |
| Number of Bits per Element |
8 |
| Propagation Delay (tpd) |
20 ns |
| Length |
25.4mm |
| Width |
7.62mm |
| RoHS Status |
ROHS3 Compliant |
SN74AS638AN Overview
Logical driver uses a neat 20-DIP (0.300, 7.62mm) package. Tube external packaging. Available in Through Hole. Voltage buffer adopts Transceiver, 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 - 64mA; 15mA 64mA. 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 74AS series devices. 20 terminations with different functions. Buffer IC reuqires a supply voltage of 5V. Electronic parts from the AS family are used in this part. 20 pins are set with the electric part. Enhanced with 2 ports. The bus transceiver employs 8 bits for each element. To supply the device, a minimum voltage of 4.5V is a must. Logical driver features WITH DIRECTION CONTROL to better serve the need.
SN74AS638AN Features
WITH DIRECTION CONTROL
SN74AS638AN Applications
There are a lot of Rochester Electronics, LLC SN74AS638AN Buffers & Transceivers applications.
- Telecom and datacom networking applications
- TV signal transmission
- Car radio
- Cell phones
- VoIP phones
- Data center
- Gigabit Ethernet
- Single to Multimode Fiber Conversion
- 1x/2x Fiber Channel
- WDM transmission