74F821SCX

© 2000 Fairchild Semiconductor Corporation DS009595 www.fairchildsemi.com
April 1988
Revised October 2000
74F821 10-Bit D-Type Flip-Flop
74F821
10-Bit D-Type Flip-Flop
General Description
The 74F821 is a 10-bit D-type flip-flop with 3-STATE true
outputs arranged in a broadside pinout.
Features
3-STATE Outputs
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
IEEE/IEC
Connection Diagram
Order Number Package Number Package Description
74F821SC M24B 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74F821SPC N24C 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
www.fairchildsemi.com 2
74F821
Unit Loading/Fan Out
Functional Description
The 74F821 consists of ten D-type edge-triggered flip-
flops. This device has 3-STATE true outputs for bus sys-
tems organized in a broadside pinning. The buffered Clock
(CP) and buffered Output Enable (OE
) are common to all
flip-flops. The flip-flops will store the state of their individual
D inputs that meet the setup and hold times requirements
on the LOW-to-HIGH CP transition. With the OE
LOW the
content of the flip-flops are available at the outputs. When
the OE
is HIGH, the outputs go to the high impedance
state. Operation of the OE
input does not affect the state of
the flip-flops.
Function Table
L = LOW Voltage Level
H = HIGH Voltage Level
X = Immaterial
Z = High Impedance
= LOW-to-HIGH Transition
NC = No Change
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
Pin Names Description
U.L.
Input I
IH
/I
IL
HIGH/LOW
Output I
OH
/I
OL
D
0
D
9
Data Inputs 1.0/1.0 20 µA/0.6 mA
OE
Output Enable 1.0/1.0 20 µA/0.6 mA
3-STATE Input
CP Clock Input 1.0/1.0 20 µA/0.6 mA
O
0
O
9
3-STATE Outputs 150/40 (33.3) 3.0 mA/24 mA (20 mA)
Inputs Internal Output
Function
OE
CP D Q O
H H X NC Z Hold
H L X NC Z Hold
H
L H Z Load
H
H L Z Load
L
L H L Data Available
L
H L H Data Available
L H X NC NC No Change in Data
L L X NC NC No Change in Data
3 www.fairchildsemi.com
74F821
Absolute Maximum Ratings(Note 1) Recommended Operating
Conditions
Note 1: 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 2: Either voltage limit or current limit is sufficient to protect inputs.
DC Electrical Characteristics
Storage Temperature 65°C to +150°C
Ambient Temperature under Bias
55°C to +125°C
Junction Temperature under Bias
55°C to +150°C
V
CC
Pin Potential to Ground Pin 0.5V to +7.0V
Input Voltage (Note 2)
0.5V to +7.0V
Input Current (Note 2)
30 mA to +5.0 mA
Voltage Applied to Output
in HIGH State (with V
CC
= 0V)
Standard Output
0.5V to V
CC
3-STATE Output 0.5V to +5.5V
Current Applied to Output
in LOW State (Max) twice the rated I
OL
(mA)
Free Air Ambient Temperature 0
°C to +70°C
Supply Voltage
+4.5V to +5.5V
Symbol Parameter Min Typ Max Units
V
CC
Conditions
V
IH
Input HIGH Voltage 2.0 V Recognized as a HIGH Signal
V
IL
Input LOW Voltage 0.8 V Recognized as a LOW Signal
V
CD
Input Clamp Diode Voltage 1.2 V Min I
IN
= 18 mA
V
OH
Output HIGH 10% V
CC
2.5
VMin
I
OH
= 1 mA
Voltage 10% V
CC
2.4 I
OH
= 3 mA
5% V
CC
2.7 I
OH
= 1 mA
5% V
CC
2.7 I
OH
= 3 mA
V
OL
Output LOW Voltage 10% V
CC
0.5 V Min I
OL
= 24 mA
I
IH
Input HIGH Current
5.0 µAMaxV
IN
= 2.7V
I
BVI
Input HIGH Current
7.0 µAMaxV
IN
= 7.0V
Breakdown Test
I
CEX
Output HIGH
50 µAMaxV
OUT
= V
CC
Leakage Current
V
ID
Input Leakage
4.75 V 0.0
I
ID
= 1.9 µA,
Test All Other Pins Grounded
I
OD
Output Leakage
3.75 µA0.0
V
IOD
= 150 mV
Circuit Current All Other Pins Grounded
I
IL
Input LOW Current 0.6 mA Max V
IN
= 0.5V
I
OZH
Output Leakage Current 50 µAMaxV
OUT
= 2.7V
I
OZL
Output Leakage Current 50 µAMaxV
OUT
= 0.5V
I
OS
Output Short-Circuit Current 60 150 mA Max V
OUT
= 0V
I
CCZ
Power Supply Current 78 100 mA Max V
O
= HIGH Z

74F821SCX

Mfr. #:
Manufacturer:
ON Semiconductor / Fairchild
Description:
Flip Flops 10-Bit D Flip-Flop
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet