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OCTAL D FLIP-FLOP WITH ENABLE; HEX D FLIP-FLOP WITH ENABLE; 4-BIT D FLIP-FLOP WITH ENABLE
The SN54 / 74LS377 is an 8-bit register built using advanced Low Power Schottky technology. This register consists of eight D-type flip-flops with a buffered common clock and a buffered common clock enable. The SN54 / 74LS378 is a 6-Bit Register with a buffered common enable. This device is similar to the SN54 / 74LS174, but with common Enable rather than common Master Reset. The SN54 / 74LS379 is a 4-Bit Register with buffered common Enable. This device is similar to the SN54 / 74LS175 but features the common Enable rather then common Master Reset.
SN54/74LS377 SN54/74LS378 SN54/74LS379
OCTAL D FLIP-FLOP WITH ENABLE; HEX D FLIP-FLOP WITH ENABLE; 4-BIT D FLIP-FLOP WITH ENABLE
LOW POWER SCHOTTKY
* * * * *
8-Bit High Speed Parallel Registers Positive Edge-Triggered D-Type Flip Flops Fully Buffered Common Clock and Enable Inputs True and Complement Outputs Input Clamp Diodes Limit High Speed Termination Effects
20 1
J SUFFIX CERAMIC CASE 732-03
PIN NAMES
LOADING (Note a) HIGH LOW 0.25 U.L. 0.25 U.L. 0.25 U.L. 5 (2.5) U.L. 5 (2.5) U.L.
20 1
N SUFFIX PLASTIC CASE 738-03
E D0 - D3 CP Q0 - Q3 Q0 - Q3
Enable (Active LOW) Input Data Inputs Clock (Active HIGH Going Edge) Input True Outputs (Note b) Complemented Outputs (Note b)
0.5 U.L. 0.5 U.L. 0.5 U.L. 10 U.L. 10 U.L.
20 1
DW SUFFIX SOIC CASE 751D-03
NOTES: a) 1 TTL Unit Load (U.L.) = 40 A HIGH/1.6 mA LOW. b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74) Temperature Ranges. 16 1
J SUFFIX CERAMIC CASE 620-09
16 1
N SUFFIX PLASTIC CASE 648-08
16 1
D SUFFIX SOIC CASE 751B-03
ORDERING INFORMATION
SN54LSXXXJ SN74LSXXXN SN74LSXXXDW SN74LSXXXD Ceramic Plastic SOIC SOIC
FAST AND LS TTL DATA 5-533
SN54/74LS377 * SN54/74LS378 * SN54/74LS379
CONNECTION DIAGRAM DIPS (TOP VIEW) SN54 / 74LS377
VCC 20 Q7 19 D7 18 D6 17 Q6 16 Q5 15 D5 14 D4 13 Q4 12 CP 11
NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package.
1 E
2 Q0
3 D0
4 D1
5 Q1
6 Q2
7 D2
8 D3
9 Q3
10 GND
SN54 / 74LS378
VCC 16 Q5 15 D5 14 D4 13 Q4 12 D3 11 Q3 10 CP 9
NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package.
1 E
2 Q0
3 D0
4 D1
5 Q1
6 D2
7 Q2
8 GND
SN54 / 74LS379
VCC 16 Q3 15 Q3 14 D3 13 D2 12 Q2 11 Q2 10 CP 9
NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package.
1 E
2 Q0
3 Q0
4 D0
5 D1
6 Q1
7 Q1
8 GND
FAST AND LS TTL DATA 5-534
SN54/74LS377 * SN54/74LS378 * SN54/74LS379
LOGIC DIAGRAMS SN54 / 74LS377
3 4 7 8 13 14 17 18
E ENABLE
D0
1
D1
D2
D3
D4
D5
D6
D7
CP CLOCK
11
CP D Q
CP D Q
CP D Q
CP D Q
CP D Q
CP D Q
CP D Q
CP D Q
Q0
2
Q1
5
Q2
6
Q3
9
Q4
12
Q5
15
Q6
16
Q7
19
SN54 / 74LS378
3 4 6 11 13 14
D0 CP
9
D1
D2
D3
D4
D5
CP D E Q
1
CP D E Q
CP D E Q
CP D E Q
CP D E Q
CP D E Q
E Q0
2
Q1
5
Q2
7
Q3
10
Q4
12
Q5
15
SN54 / 74LS379
4
5
12
13
D0 CP
9
D1
D2
D3
E
1
CP Q
D Q
E
CP Q
D Q
E
CP Q
D Q
E
CP Q
D Q
E Q0
3
Q0
2
Q1
6
Q1
7
Q2
11
Q2
10
Q3
14
Q3
15
FAST AND LS TTL DATA 5-535
SN54/74LS377 * SN54/74LS378 * SN54/74LS379
GUARANTEED OPERATING RANGES
Symbol VCC TA IOH IOL Supply Voltage Operating Ambient Temperature Range Output Current -- High Output Current -- Low Parameter 54 74 54 74 54, 74 54 74 Min 4.5 4.75 - 55 0 Typ 5.0 5.0 25 25 Max 5.5 5.25 125 70 - 0.4 4.0 8.0 Unit V C mA mA
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits Symbol VIH VIL VIK VOH Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 54 74 54, 74 VOL Output LOW Voltage 74 Input HIGH Current Input LOW Current Short Circuit Current (Note 1) Power Supply Current LS377 LS378 LS379 - 20 0.35 0.5 20 0.1 - 0.4 - 100 28 22 15 V A mA mA mA mA 2.5 2.7 54 74 - 0.65 3.5 3.5 0.25 0.4 Min 2.0 0.7 0.8 - 1.5 Typ Max Unit V V V V V V Test Conditions Guaranteed Input HIGH Voltage for All Inputs Guaranteed Input LOW Voltage for All Inputs VCC = MIN, IIN = - 18 mA VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table IOL = 4.0 mA IOL = 8.0 mA VCC = VCC MIN, VIN = VIL or VIH per Truth Table
IIH IIL IOS ICC
VCC = MAX, VIN = 2.7 V VCC = MAX, VIN = 7.0 V VCC = MAX, VIN = 0.4 V VCC = MAX VCC = MAX, NOTE 1
NOTE: With all inputs open and GND applied to all data and enable inputs, ICC is measured after a momentary GND, then 4.5 V is applied to clock. Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (TA = 25C, VCC = 5.0 V)
Limits Symbol fMAX tPLH tPHL Parameter Maximum Clock Frequency Propagation Delay, Clock to Output Min 30 Typ 40 17 18 27 27 Max Unit MHz ns Test Conditions VCC = 5.0 V CL = 15 pF
AC SETUP REQUIREMENTS (TA = 25C, VCC = 5.0 V)
Limits Symbol tW ts ts th Parameter Any Pulse Width Data Setup Time Enable Setup Time Any Hold Time Inactive -- State Active -- State Min 20 20 10 25 5.0 Typ Max Unit ns ns ns ns ns VCC = 5.0 V Test Conditions
DEFINITION OF TERMS SETUP TIME (ts) -- is defined as the minimum time required for the correct logic level to be present at the logic input prior to the clock transition from LOW-to-HIGH in order to be recognized and transferred to the outputs. HOLD TIME (th) -- is defined as the minimum time following
the clock transition from LOW-to-HIGH that the logic level must be maintained at the input in order to ensure continued recognition. A negative HOLD TIME indicates that the correct logic level may be released prior to the clock transition from LOW-to-HIGH and still be recognized.
FAST AND LS TTL DATA 5-536
SN54/74LS377 * SN54/74LS378 * SN54/74LS379
TRUTH TABLE
E H L L
L = LOW Voltage Level H = HIGH Voltage Level X = Immaterial
CP
Dn X H L
Qn No Change H L
Qn No Change L H
AC WAVEFORMS
SN54 / 74LS377
1/fmax tW CP 1.3 V ts(H) ts(L) 1.3 V CP 1.3 V ts(H)
SN54 / 74LS378
1/fmax tW 1.3 V ts(L) th(H) E, D th(L)
th(H) 1.3 V
th(L) 1.3 V
D OR E
*
*
1.3 V tPHL 1.3 V
1.3 V tPLH 1.3 V
tPLH Q 1.3 V
tPHL 1.3 V Q
Figure 1. Clock to Output Delays Clock Pulse Width, Frequency, Setup and Hold Times Data or Enable to Clock
Figure 2. Clock to Output Delays Clock Pulse Width, Frequency, Setup and Hold Times Data or Enable to Clock
SN54 / 74LS379
1/fmax tW CP 1.3 V ts(H) ts(L) 1.3 V
th(H)
th(L)
E, D
*
1.3 V tPLH 1.3 V
1.3 V tPHL 1.3 V
Q
*The shaded areas indicate when the input is permitted to change for predictable output performance.
Figure 3. Clock to Output Delays Clock Pulse Width, Frequency, Setup and Hold Times Data, Enable to Clock
FAST AND LS TTL DATA 5-537
-A-
Case 751B-03 D Suffix 16-Pin Plastic SO-16
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. 3. CONTROLLING DIMENSION: MILLIMETER. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. 751B 01 IS OBSOLETE, NEW STANDARD 751B 03.
16
9
-B1 8
P
8 PL
0.25 (0.010)
M
B
M
R X 45 G -TD 16 PL
0.25 (0.010)
M
C
SEATING PLANE
K
T B
S
M
F
J
A
S
DIM A B C D F G J K M P R
MILLIMETERS MIN MAX
9.80 3.80 1.35 0.35 0.40 10.00 4.00 1.75 0.49 1.25
INCHES MIN MAX
0.386 0.150 0.054 0.014 0.016 0.393 0.157 0.068 0.019 0.049
1.27 BSC 0.19 0.10 0 5.80 0.25 0.25 0.25 7 6.20 0.50
0.050 BSC 0.008 0.004 0 0.229 0.010 0.009 0.009 7 0.244 0.019
Case 648-08 N Suffix 16-Pin Plastic -A16 9
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. 3. CONTROLLING DIMENSION: INCH. DIMENSION L" TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B" DOES NOT INCLUDE MOLD FLASH. 5. 6. ROUNDED CORNERS OPTIONAL. 648 01 THRU 07 OBSOLETE, NEW STANDARD 648 08.
B
1 8
F S
C -TK
SEATING PLANE
L
H G D 16 PL
0.25 (0.010)
M
J
M
T
A
M
DIM A B C D F G H J K L M S
MILLIMETERS MIN MAX
18.80 6.35 3.69 0.39 1.02 19.55 6.85 4.44 0.53 1.77
INCHES MIN MAX
0.740 0.250 0.145 0.015 0.040 0.770 0.270 0.175 0.021 0.070
2.54 BSC 1.27 BSC 0.21 2.80 7.50 0 0.51 0.38 3.30 7.74 10 1.01
0.100 BSC 0.050 BSC 0.008 0.110 0.295 0 0.020 0.015 0.130 0.305 10 0.040
-A16 9
Case 620-09 J Suffix 16-Pin Ceramic Dual In-Line
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH.
-B1 8
3. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 4. DIM F MAY NARROW TO 0.76 (0.030) WHERE THE LEAD ENTERS THE CERAMIC BODY.
C
L
5. 620 01 THRU 08 OBSOLETE, NEW STANDARD 620 09.
-TSEATING PLANE
K E F D 16 PL
0.25 (0.010)
M
N G
T A
S
M J 16 PL
0.25 (0.010)
M
T
B
S
DIM A B C D E F G J K L M N
MILLIMETERS MIN MAX
19.05 6.10 19.55 7.36 4.19 0.39 0.53
INCHES MIN MAX
0.750 0.240 0.770 0.290 0.165 0.015 0.021
1.27 BSC 1.40 1.77
0.050 BSC 0.055 0.070
2.54 BSC 0.23 0.27 5.08 7.62 BSC 0 0.39 15 0.88
0.100 BSC 0.009 0.011 0.200 0.300 BSC 0 0.015 15 0.035
FAST AND LS TTL DATA 5-538
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters can and do vary in different applications. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.
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FAST AND LS TTL DATA 5-539

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