Features: • High speed parallel registers with positive edge-triggered D-type flip-flops
• High performance bus interface buffering for wide data/address paths or busses carrying parity
• High impedance PNP base inputs for reduced loading (20mA in high and low states)
• IIL is 20mA vs 1000mA for AM29821 series
• Buffered control inputs to reduce AC effects
• Ideal where high speed, light loading, or increased fan-in as required with MOS microprocessor
• Positive and negative over-shoots are clamped to ground
• 3-State outputs glitch free during power-up and power-down
• Slim Dip 300 mil package
• Broadside pinout compatible with AMD AM 29821-29826 series
• Outputs sink 64mA and source 24mA
• Industrial temperature range available (40°C to +85°C) for 74F823Pinout
Specifications
| SYMBOL |
PARAMETER |
RATING |
UNIT |
| VCC |
Supply voltage |
0.5 to +7.0 |
V |
| VIN |
Input voltage |
0.5 to +7.0 |
V |
| IIN |
Input current |
30 to +5 |
mA |
| VOUT |
Voltage applied to output in high output state |
0.5 to VCC |
V |
| IOUT |
Current applied to output in low output state |
128 |
mA |
| Tamb |
Operating free air temperature range |
Commercial range |
0 to +70 |
|
| Industrial range |
40 to +85
|
|
| Tstg |
Storage temperature range |
65 to +150 |
|
DescriptionThe 74F825 series bus interface registers are designed to eliminate the extra packages required to buffer existing registers and provide extra data width for wider data/address paths of busses carrying parity.
The 74F825 are buffered 10-bit wide versions of the popular 74F374/74F534 functions.
The 74F825 is the inverted output version of 74F821. The 74F823 and 74F824 are 9-bit wide buffered registers with clock enable (CE ) and master reset (MR) which are ideal for parity bus interfacing in high microprogrammed systems.
The 74F825 is the inverted version of 74F823.
The 74F825 are 8-bit buffered registers with all the 74F823/74F824 controls plus output enable (OE0, OE1, OE2) to allow multiuser control of the interface, e.g., CS, DMA, and RD/WR.
They are ideal for uses as an output port requiring high IOL/IOH.
The 74F825 is the inverted version of 74F825.
74F825 Data Sheet
