SDFS030B − D2932, MARCH 1987 − REVISED OCTOBER 1993
•
•
•
•
D OR N PACKAGE
(TOP VIEW)
Contains Six D-Type Flip-Flops
With Single-Rail Outputs
Applications Include:
Buffer/Storage Registers
Shift Registers
Pattern Generators
Buffered Common Enable Input
Package Options Include Plastic
Small-Outline Packages and Standard
Plastic 300-mil DIPs
CLKEN
1Q
1D
2D
2Q
3D
3Q
GND
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
VCC
6Q
6D
5D
5Q
4D
4Q
CLK
description
The SN74F378 is a positive-edge-triggered D-type flip-flop with a clock enable (CLKEN) input. The SN74F378
is similar to the SN74F174 but features a common clock enable instead of a common clear.
Information at the data (D) inputs meeting the setup time requirements is transferred to the Q outputs on the
positive-going edge of the clock pulse if CLKEN is low. Clock triggering occurs at a particular voltage level and
is not directly related to the positive-going pulse. When the clock (CLK) input is at either the high or low level,
the D-input signal has no effect at the output.
The SN74F378 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each flip-flop)
INPUTS
D
OUTPUT
Q
X
X
Q0
↑
H
H
CLKEN
CLK
H
L
L
↑
L
L
X
L
X
Q0
logic symbol†
CLKEN
CLK
1D
2D
3D
4D
5D
6D
1
G1
9
1C2
3
2
2D
4
5
6
7
11
10
13
12
14
15
1Q
2Q
3Q
4Q
5Q
6Q
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Copyright 1993, Texas Instruments Incorporated
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2−1
SDFS030B − D2932, MARCH 1987 − REVISED OCTOBER 1993
logic diagram (positive logic)
CLKEN
CLK
1D
1
9
3
1D
C1
2
1Q
Four Identical Channels
Not Shown
6D
14
1D
C1
15
6Q
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −1.2 V to 7 V
Input current range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −30 mA to 5 mA
Voltage range applied to any output in the high state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to VCC
Current into any output in the low state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA
Operating free-air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: The input-voltage ratings may be exceeded provided the input-current ratings are observed.
recommended operating conditions
MIN
NOM
MAX
4.5
5
5.5
UNIT
VCC
VIH
Supply voltage
VIL
IIK
Low-level input voltage
0.8
V
Input clamp current
−18
mA
IOH
IOL
High-level output current
−1
mA
20
mA
TA
Operating free-air temperature
70
°C
2−2
High-level input voltage
2
Low-level output current
0
•
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
V
V
SDFS030B − D2932, MARCH 1987 − REVISED OCTOBER 1993
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VIK
VOH
VOL
II
IIH
IIL
IOS‡
ICC
MIN
VCC = 4.5 V,
VCC = 4.5 V,
II = − 18 mA
IOH = − 1 mA
VCC = 4.75 V,
VCC = 4.5 V,
IOH = − 1 mA
IOL = 20 mA
VCC = 5.5 V,
VCC = 5.5 V,
VI = 7 V
VI = 2.7 V
VCC = 5.5 V,
VCC = 5.5 V,
VI = 0.5 V
VO = 0
TYP†
2.5
MAX
UNIT
− 1.2
V
3.4
V
2.7
0.3
− 60
0.5
V
0.1
mA
20
µA
− 0.6
mA
− 150
mA
VCC = 5.5 V,
See Note 2
30
45
mA
† All typical values are at VCC = 5 V, TA = 25°C.
‡ Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
NOTE 2: ICC is measured with all outputs open, all data inputs and the enable input grounded, and the clock input at 4.5 V after being momentarily
grounded.
timing requirements
VCC = 5 V,
TA = 25°C
fclock
MIN
MAX
MIN
MAX
0
110
0
110
Clock frequency
tw
Pulse duration
tsu
Setup time before CLK↑
CLK high
4
4
CLK low
6
6
Data high or low
th
5
5
3.5
3.5
CLKEN low
5
5
Data high or low
1
1
CLKEN high or low
0
0
CLKEN high
Hold time after CLK↑
VCC = 4.5 V to 5.5 V,
TA = MIN to MAX§
UNIT
MHz
ns
ns
ns
switching characteristics (see Note 3)
PARAMETER
fmax
tPLH
tPHL
FROM
(INPUT)
CLK
TO
(OUTPUT)
Any Q
VCC = 5 V,
CL = 50 pF,
RL = 500 Ω,
TA = 25°C
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500 Ω,
TA = MIN to MAX§
MIN
TYP
MAX
MIN
110
125
3.3
4.5
6.1
3.1
6.7
3
4.2
6
2.9
6.1
UNIT
MAX
110
MHz
ns
§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 3: Load circuits and waveforms are shown in Section 1.
•
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•
2−3
PACKAGE OPTION ADDENDUM
www.ti.com
18-Sep-2008
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
Lead/Ball Finish
MSL Peak Temp (3)
SN74F378D
OBSOLETE
SOIC
D
16
TBD
Call TI
Call TI
SN74F378DR
OBSOLETE
SOIC
D
16
TBD
Call TI
Call TI
SN74F378N
OBSOLETE
PDIP
N
16
TBD
Call TI
Call TI
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
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Addendum-Page 1
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