74F794PC

74F794PC Datasheet

74F794 8-Bit Register with Readback

Part	Datasheet
74F794PC	74F794PC (pdf)

PDF Datasheet Preview
74F794 8-Bit Register with Readback 74F794 8-Bit Register with Readback The 74F794 is an 8-bit register with readback capability designed to store data as well as read the register information back onto the data bus. The I/O bus D bus has 3-STATE outputs. Current sinking capability is 64 mA on both the D and Q busses. Data is loaded into the registers on the LOW-to-HIGH transition of the clock CP . The output enable OE is used to enable data on When OE is LOW, the output of the registers is enabled on enabling D as an output bus. When OE is HIGH, are inputs to the registers configuring D as an input bus. s 3-STATE outputs on the I/O port s D and Q output sink capability of 64 mA s Functionally and pin equivalent to the 74LS794 Ordering Code: Order Number Package Number Package Description 74F794PC N20A 20-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Logic Symbol Connection Diagram 2004 Fairchild Semiconductor Corporation DS010652 74F794 Input Loading/Fan-Out Pin Names OE CP Output Enable Input Clock Pulse Inputs D Bus Inputs/ 3-STATE Outputs Q Bus Outputs Truth Table Inputs Outputs L or H or L or H or L Qn Output, Q H Qn Input L Qn Output, Q Note 1 H D Input Note 1 In this case the output of the register is clocked to the inputs and the overall Q output is unchanged at Qn. HIGH/LOW U.L. Current 20 µA/−0.6 mA 20 µA/−0.6 mA 70 µA/−650 µA −15 mA/64 mA −15 mA/64 mA Logic Diagram 74F794 Absolute Maximum Ratings Note 2 Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias VCC Pin Potential to Ground Pin Input Voltage Note 3 Input Current Note 3 ESD Last Passing Voltage Min Voltage Applied to Output In HIGH State with VCC = 0V Standard Output 3-STATE Output Current Applied to Output in LOW State Max −65°C to + 150°C −55° to +125°C −55°C to +150°C −0.5V to +7.0V −0.5V to +7.0V −30 mA to mA 4000V −0.5V to VCC −0.5V to +5.5V Twice the Rated IOL mA Recommended Operating Conditions Free Air Ambient Temperature Supply Voltage 0°C to 70°C +4.5V to +5.5V Note 2 Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired. Functional operation under these conditions is not implied. Note 3 In this case the output of the register is clocked to the inputs and the overall Q output is unchanged at Qn. Note 4 Either voltage limit or current limit is sufficient to protect inputs. DC Electrical Characteristics over Operating Temperature Range unless otherwise specified

PDF Datasheet Preview

74F794 8-Bit Register with Readback
74F794 8-Bit Register with Readback

The 74F794 is an 8-bit register with readback capability designed to store data as well as read the register information back onto the data bus. The I/O bus D bus has 3-STATE outputs. Current sinking capability is 64 mA on both the D and Q busses.

Data is loaded into the registers on the LOW-to-HIGH transition of the clock CP . The output enable OE is used to enable data on When OE is LOW, the output of the registers is enabled on enabling D as an output bus. When OE is HIGH, are inputs to the registers configuring D as an input bus.
s 3-STATE outputs on the I/O port s D and Q output sink capability of 64 mA s Functionally and pin equivalent to the 74LS794
Ordering Code:

Order Number Package Number

Package Description
74F794PC

N20A
20-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide

Logic Symbol

Connection Diagram
2004 Fairchild Semiconductor Corporation DS010652
74F794

Input Loading/Fan-Out

Pin Names

OE CP

Output Enable Input Clock Pulse Inputs D Bus Inputs/ 3-STATE Outputs Q Bus Outputs

Truth Table

Inputs

Outputs

L or H or L or H or

L Qn Output, Q H Qn Input L Qn Output, Q Note 1 H D Input

Note 1 In this case the output of the register is clocked to the inputs and the overall Q output is unchanged at Qn.

HIGH/LOW

U.L.

Current
20 µA/−0.6 mA 20 µA/−0.6 mA 70 µA/−650 µA −15 mA/64 mA −15 mA/64 mA

Logic Diagram
74F794

Absolute Maximum Ratings Note 2

Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias VCC Pin Potential to Ground Pin Input Voltage Note 3 Input Current Note 3 ESD Last Passing Voltage Min Voltage Applied to Output

In HIGH State with VCC = 0V Standard Output 3-STATE Output Current Applied to Output in LOW State Max
−65°C to + 150°C −55° to +125°C
−55°C to +150°C −0.5V to +7.0V −0.5V to +7.0V
−30 mA to mA 4000V
−0.5V to VCC −0.5V to +5.5V

Twice the Rated IOL mA

Recommended Operating Conditions

Free Air Ambient Temperature Supply Voltage
0°C to 70°C +4.5V to +5.5V

Note 2 Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired. Functional operation under these conditions is not implied.

Note 3 In this case the output of the register is clocked to the inputs and the overall Q output is unchanged at Qn.

Note 4 Either voltage limit or current limit is sufficient to protect inputs.

DC Electrical Characteristics over Operating Temperature Range unless otherwise specified

More datasheets: OS-C-500 | FSB50325S | B39941B7710C610 | 833202B00000 | 74F401PC | FPF2027 | FPF2026 | FPF2025 | FPF2024 | 514SDRD/S530-A3

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived 74F794PC Datasheet file may be downloaded here without warranties.

Datasheet ID: 74F794PC 513372