74VHC273 Datasheet – Octal D-Type Flip-Flop

Part Number : 74VHC273

Function : Octal D-Type Flip-Flop

Package : DIP, SOIC, SOP, TSSOP 20 Pin Type

Manufacturers : Fairchild Semiconductor

Pinouts :

74VHC273 datasheet


Description :

The 74VHC273 is an advanced high speed CMOS Octal D-type flip-flop fabricated with silicon gate CMOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation.

The register has a common buffered Clock (CP) which is fully edge-triggered. The state of each D input, one setup time before the LOW-to-HIGH clock transition, is transferred to the corresponding flip-flop’s Q output. The Master Reset (MR) input will clear all flip-flops simultaneously.


1. High Speed: fMAX=165MHz (typ) at VCC=5V

2. Low power dissipation: ICC=4µA (max) at TA=25°C

3. High noise immunity: VNIH=VNIL=28% VCC(min)

4. Power down protection is provided on all inputs

5. Low noise: VOLP=0.9V (max)

6. Pin and function compatible with 74HC273

7. Leadless DQFN Package

Other data sheets within the file :

74VHC273BQ, 74VHC273M, 74VHC273MTC, 74VHC273SJ

74VHC273 Datasheet PDF Download

74VHC273 pdf

74LV245 Datasheet – Octal Bus Transceiver

Part Number : 74LV245

Function : Octal Bus Transceiver (3-State)

Package : DIP, SO, SSOP, TSSOP 20 pin Type

Manufacturers : NXP Semiconductors.

Pinouts :

74LV245 datasheet


Description :

The 74LV245 is a low-voltage Si-gate CMOS device that is pin and function compatible with 74HC245 and 74HCT245.

The device is an octal transceiver with non-inverting 3-state bus compatible outputs in both send and receive directions. A send/receive (DIR) input controls direction, and an output enable (OE) input makes easy cascading possible. PinOE controls the outputs so that the buses are effectively isolated.

Features :

1. Wide operating voltage: 1.0 V to 5.5 V

2. Optimized for low voltage applications: 1.0 V to 3.6 V

3. Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V

4. Typical output ground bounce < 0.8 V at VCC = 3.3 V and Tamb = 25 °C

5. Typical HIGH-level output voltage (VOH) undershoot: > 2 V at VCC = 3.3 V and
Tamb = 25 °C


Other data sheets within the file :

74LV245D, 74LV245DB, 74LV245N, 74LV245PW


74LV245 Datasheet PDF Download

74LV245 pdf