DATA SHEET
SNx4HC377 Octal D-Type Flip-Flops With Clock Enable
1 Features
- Wide operating voltage range of 2 V to 6 V
- Outputs can drive up to 10 LSTTL loads
- Low power consumption, 80-µA max ICC
- Typical tpd = 12 ns
- ±4-mA output drive at 5 V
- Low input current of 1 µA max
- Eight flip-flops with single-rail outputs
- Clock enable latched to avoid false clocking
2 Applications
- Buffer/storage registers
- Shift registers
- Pattern generators
3 Description
These devices are positive-edge-triggered octal D-type flip-flops with an enable input. The ’HC377 devices are similar to the ’HC273 devices, but feature a latched clock-enable (CLKEN) input instead of a common clear.
Device Information
| PART NUMBER | PACKAGE(1) | BODY SIZE (NOM) |
|---|---|---|
| SN74HC377DW | SOIC (20) | 12.80 mm × 7.50 mm |
| SN74HC377N | PDIP (20) | 25.40 mm × 6.35 mm |
| SN74HC377NS | SO (20) | 15.00 mm × 5.30 mm |
| SN54HC377J | CDIP (20) | 26.92 mm × 6.92 mm |
| SNJ54HC377FK | LCCC (20) | 8.89 mm × 8.45 mm |
(1) For all
available packages, see the orderable addendum at the end of the data
sheet.
Functional Block
Diagram4 Revision History
Changes from Revision C (January 2022) to Revision D (May 2022)
- Junction-to-ambient thermal resistance values increased. DW was 58 is now 109.1, N was 69 is now 84.6, NS was 60 is now 113.4Go
Changes from Revision B (January 2003) to Revision C (January 2022)
- Updated the numbering, formatting, tables, figures, and cross-references throughout the document to reflect modern data sheet standardsGo
