Datasheet Texas Instruments SN74LS646
| Manufacturer | Texas Instruments |
| Series | SN74LS646 |
Octal bus transceivers and registers
Datasheets
SN54LS646 THRU SN54LS649, SN74LS646 THRU SN74LS649 datasheet
PDF, 904 Kb, Revision: A, File published: Apr 22, 2004
Extract from the document
Status
| SN74LS646DW | SN74LS646NT3 | |
|---|---|---|
| Lifecycle Status | Active (Recommended for new designs) | Obsolete (Manufacturer has discontinued the production of the device) |
| Manufacture's Sample Availability | No | No |
Packaging
| SN74LS646DW | SN74LS646NT3 | |
|---|---|---|
| N | 1 | 2 |
| Pin | 24 | 24 |
| Package Type | DW | NT |
| Industry STD Term | SOIC | PDIP |
| JEDEC Code | R-PDSO-G | R-PDIP-T |
| Package QTY | 25 | |
| Carrier | TUBE | |
| Device Marking | LS646 | |
| Width (mm) | 7.5 | 6.73 |
| Length (mm) | 15.4 | 31.64 |
| Thickness (mm) | 2.35 | 4.57 |
| Pitch (mm) | 1.27 | 2.54 |
| Max Height (mm) | 2.65 | 5.08 |
| Mechanical Data | Download | Download |
Parametrics
| Parameters / Models | SN74LS646DW | SN74LS646NT3 |
|---|---|---|
| Approx. Price (US$) | 3.41 | 1ku | |
| Bits | 8 | |
| Bits(#) | 8 | |
| F @ Nom Voltage(Max), Mhz | 35 | |
| F @ Nom Voltage(Max)(Mhz) | 35 | |
| ICC @ Nom Voltage(Max), mA | 0.165 | |
| ICC @ Nom Voltage(Max)(mA) | 0.165 | |
| Input Type | TTL | |
| Operating Temperature Range, C | 0 to 70 | |
| Operating Temperature Range(C) | 0 to 70 | |
| Output Drive (IOL/IOH)(Max), mA | -15/24 | |
| Output Drive (IOL/IOH)(Max)(mA) | -15/24 | |
| Output Type | TTL | |
| Package Group | SOIC | SOIC |
| Package Size: mm2:W x L, PKG | 24SOIC: 160 mm2: 10.3 x 15.5(SOIC) | |
| Package Size: mm2:W x L (PKG) | See datasheet (PDIP) | |
| Rating | Catalog | Catalog |
| Schmitt Trigger | No | No |
| Technology Family | LS | LS |
| VCC(Max), V | 5.25 | |
| VCC(Max)(V) | 5.25 | |
| VCC(Min), V | 4.75 | |
| VCC(Min)(V) | 4.75 | |
| Voltage(Nom), V | 5 | |
| Voltage(Nom)(V) | 5 | |
| tpd @ Nom Voltage(Max), ns | 20 | |
| tpd @ Nom Voltage(Max)(ns) | 20 |
Eco Plan
| SN74LS646DW | SN74LS646NT3 | |
|---|---|---|
| RoHS | Compliant | Not Compliant |
| Pb Free | No |
Application Notes
- Designing with the SN54/74LS123 (Rev. A)PDF, 118 Kb, Revision: A, File published: Mar 1, 1997
The Texas Instruments (TI) SN54/74LS123 dual retriggerable monostable multivibrator is a one-shot device capable of verylong output pulses and up to 100% duty cycle. The ?LS123 also features dc triggering from gated low-level active A andhigh-level active B inputs and provides a clear input that terminates the output pulse of any predetermined time independentof timing components R ext and
Model Line
Series: SN74LS646 (2)
Manufacturer's Classification
- Semiconductors> Logic> Buffer/Driver/Transceiver> Registered Transceiver