74F544
74F544 is Octal Registered Transceiver manufactured by Fairchild Semiconductor.
Description
The 74F544 octal transceiver contains two sets of D-type latches for temporary storage of data flowing in either direction. Separate Latch Enable and Output Enable inputs are provided for each register to permit independent control of inputting and outputting in either direction of data flow. The A outputs are guaranteed to sink 24 m A while the B outputs are rated for 64 m A. The 74F544 inverts data in both directions.
Features s 8-bit octal transceiver s Back-to-back registers for storage s Separate controls for data flow in each direction s A outputs sink 24 m A, B outputs sink 64 m A
Ordering Code:
Order Number 74F544SC 74F544MSA 74F544SPC Package Number M24B MSA24 N24C Package Description
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 24-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-100, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
IEEE/IEC
© 1999 Fairchild Semiconductor Corporation
DS009555
.fairchildsemi.
Unit Loading/Fan Out
U.L. Pin Names OEAB OEBA CEAB CEBA LEAB LEBA A0- A7 Description
HIGH/LOW A-to-B Output Enable Input (Active LOW) B-to-A Output Enable Input (Active LOW) A-to-B Enable Input (Active LOW) B-to-A Enable Input (Active LOW) A-to-B Latch Enable Input (Active LOW) B-to-A Latch Enable Input (Active LOW) A-to-B Data Inputs or B-to-A 3-STATE Outputs B0- B7 B-to-A Data Inputs or A-to-B 3-STATE Outputs 1.0/1.0 1.0/1.0 1.0/2.0 1.0/2.0 1.0/1.0 1.0/1.0 3.5/1.083 150/40(33.3) 3.5/1.083 600/106.6(80) Input IIH/IIL Output IOH/IOL 20 µA/- 0.6 m A 20 µA/- 0.6 m A 20 µA/- 1.2 m A 20 µA/- 1.2 m A 20 µA/- 0.6 m A 20 µA/- 0.6 m A 70 µA/- 650 µA
- 3 m A/24 m A (20 m A) 70 µA/- 650 µA
- 12 m A/64 m A (48 m A)
Functional Description
The 74F544 contains two sets of eight D-type latches, with separate input and output controls for each set. For data flow from...
