Data Sheet
SNx4HC373 Octal Transparent D-Type Latches With 3-State Outputs
1 Features
- Wide operating voltage range of 2V to 6V
- High-current 3-state true outputs can drive up to 15 LSTTL loads
- Low power consumption, 80µA max ICC
- Typical tpd = 13ns
- ±6mA output drive at 5V
- Low input current of 1µA max
- Eight high-current latches in a single package
- Full parallel access for loading
2 Description
These 8-bit latches feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
The eight latches of the ’HC373 devices are transparent D-type latches. While the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low, the Q outputs are latched at the levels that were set up at the D inputs.
Device Information
| PART NUMBER | PACKAGE(1) | BODY SIZE(2) |
|---|---|---|
| SN74HC373 | DW (SOIC, 20) | 12.80 mm × 7.50 mm |
| DB (SSOP, 20) | 7.20 mm × 5.30 mm | |
| N (PDIP, 20) | 25.40 mm × 6.35 mm | |
| NS (SOP, 20) | 15.00 mm × 5.30 mm | |
| PW (TSSOP, 20) | 6.50 mm × 4.40 mm | |
| SN54HC373 | J (CDIP, 20) | 26.92 mm × 6.92 mm |
| FK (LCCC, 20) | 8.89 mm × 8.45 mm | |
| W (CFP, 20) | 13.72 mm × 6.92 mm |
(1) For more information, see Section 10.
(2) The body size (length × width) is a nominal value and does not include
pins.
Logic Diagram (Positive Logic)
