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MC74AC378 MC74ACT378 Parallel D Register with Enable
The MC74AC378/74ACT378 is a 6-bit register with a buffered common Enable. This device is similar to the MC74AC174/74ACT174, but with common Enable rather than common Master Reset. * * * * * 6-Bit High-Speed Parallel Register Positive Edge-Triggered D-Type Inputs Fully Buffered Common Clock and Enable Inputs Outputs Source/Sink 24 mA ACT378 Has TTL Compatible Inputs PARALLEL D REGISTER WITH ENABLE
VCC 16
Q5 15
D5 14
D4 13
Q4 12
D3 11
Q3 10
CP 9
N SUFFIX CASE 648-08 PLASTIC
PIN NAMES E D0-D5 CP Q0-Q5 Enable Input Data Inputs Clock Pulse Input Outputs D SUFFIX CASE 751B-05 PLASTIC
1 E
2 Q0
3 D0
4 D1
5 Q1
6 D2
7 Q2
8 GND
TRUTH TABLE
Inputs E H L L CP Dn X H L Outputs Qn No Change H L
LOGIC SYMBOL
E D0 D1 D2 D3 D4 D5 CP Q0 Q1 Q2 Q3 Q4 Q5
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial = LOW-to-HIGH Transition
FACT DATA 5-1
MC74AC378 MC74ACT378
FUNCTIONAL DESCRIPTION
The MC74AC378/74ACT378 consists of six edgetriggered D-type flip-flops with individual D inputs and Q outputs. The Clock (CP) and Enable (E) inputs are common to all flip-flops. When the E input is LOW, new data is entered into the register on the LOW-to-HIGH transition of the CP input. When the E input is HIGH, the register will retain the present data independent of the CP input.
LOGIC DIAGRAM
D0 CP D1 D2 D3 D4 D5
CP E
D E Q
CP
D E Q
CP
D E Q
CP
D E Q
CP
D E Q
CP
D Q
E Q0 Q1 Q2 Q3 Q4 Q5
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
MAXIMUM RATINGS*
Symbol VCC Vin Vout Iin Iout ICC Tstg Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Sink/Source Current, per Pin DC VCC or GND Current per Output Pin Storage Temperature Value -0.5 to +7.0 -0.5 to VCC +0.5 -0.5 to VCC +0.5 20 50 50 -65 to +150 Unit V V V mA mA mA C
* Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions.
FACT DATA 5-2
MC74AC378 MC74ACT378
RECOMMENDED OPERATING CONDITIONS
Symbol VCC Vin, Vout Supply Voltage DC Input Voltage, Output Voltage (Ref. to GND) VCC @ 3.0 V tr, tf Input Rise and Fall Time (Note 1) AC Devices except Schmitt Inputs VCC @ 4.5 V VCC @ 5.5 V tr, tf TJ TA IOH IOL Input Rise and Fall Time (Note 2) ACT Devices except Schmitt Inputs Junction Temperature (PDIP) Operating Ambient Temperature Range Output Current -- High Output Current -- Low -40 25 VCC @ 4.5 V VCC @ 5.5 V Parameter AC ACT Min 2.0 4.5 0 150 40 25 10 ns/V 8.0 140 85 -24 24 C C mA mA ns/V Typ 5.0 5.0 Max 6.0 5.5 VCC V Unit V
1. Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times. 2. Vin from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
DC CHARACTERISTICS
74AC Symbol Parameter VCC (V) TA = +25C Typ VIH Minimum High Level Input Voltage 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 VOL Maximum Low Level Output Voltage 3.0 4.5 5.5 3.0 4.5 5.5 IIN IOLD IOHD ICC Maximum Input Leakage Current Minimum Dynamic Output Current Maximum Quiescent Supply Current 5.5 5.5 5.5 5.5 8.0 0.002 0.001 0.001 1.5 2.25 2.75 1.5 2.25 2.75 2.99 4.49 5.49 74AC TA = -40C to +85C Unit Conditions
Guaranteed Limits 2.1 3.15 3.85 0.9 1.35 1.65 2.9 4.4 5.4 2.56 3.86 4.86 0.1 0.1 0.1 0.36 0.36 0.36 0.1 2.1 3.15 3.85 0.9 1.35 1.65 2.9 4.4 5.4 2.46 3.76 4.76 0.1 0.1 0.1 0.44 0.44 0.44 1.0 75 -75 80 V VOUT = 0.1 V or VCC - 0.1 V VOUT = 0.1 V or VCC - 0.1 V IOUT = -50 A V *VIN = VIL or VIH -12 mA IOH -24 mA -24 mA IOUT = 50 A V *VIN = VIL or VIH 12 mA IOL 24 mA 24 mA VI = VCC, GND VOLD = 1.65 V Max VOHD = 3.85 V Min VIN = VCC or GND
VIL
Maximum Low Level Input Voltage
V
VOH
Minimum High Level Output Voltage
V
V
A mA mA A
* All outputs loaded; thresholds on input associated with output under test. Maximum test duration 2.0 ms, one output loaded at a time. Note: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC.
FACT DATA 5-3
MC74AC378 MC74ACT378
AC CHARACTERISTICS (For Figures and Waveforms -- See Section 3)
74AC Symbol Parameter VCC* (V) Min fmax tPLH tPHL Maximum Clock Frequency Propagation Delay CP to Qn Propagation Delay CP to Qn 3.3 5.0 3.3 5.0 3.3 5.0 125 160 2.5 1.5 2.5 1.5 11 8.0 10.5 7.5 TA = +25C CL = 50 pF Typ Max 74AC TA = -40C to +85C CL = 50 pF Min 110 145 2.5 1.5 2.5 1.5 12.5 9.0 11 8.0 Max MHz ns ns 3-3 3-6 3-6 Unit Fig. No.
* Voltage Range 3.3 V is 3.3 V 0.3 V. Voltage Range 5.0 V is 5.0 V 0.5 V.
AC OPERATING REQUIREMENTS
74AC Symbol Parameter VCC* (V) Typ ts th ts th tw Setup Time, HIGH or LOW Dn to CP Hold Time, HIGH or LOW Dn to CP Setup Time, HIGH or LOW E to CP Hold Time, HIGH or LOW E to CP CP Pulse Width HIGH or LOW 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 TA = +25C CL = 50 pF 74AC TA = -40C to +85C CL = 50 pF Unit Fig. No.
Guaranteed Minimum 3.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 4.5 3.5 3.5 2.5 2.0 2.0 2.0 2.0 2.0 2.0 5.5 4.0 ns ns ns ns ns 3-9 3-9 3-9 3-9 3-6
* Voltage Range 3.3 V is 3.3 V 0.3 V. Voltage Range 5.0 V is 5.0 V 0.5 V.
FACT DATA 5-4
MC74AC378 MC74ACT378
DC CHARACTERISTICS
74ACT Symbol Parameter VCC (V) TA = +25C Typ VIH VIL VOH Minimum High Level Input Voltage Maximum Low Level Input Voltage Minimum High Level Output Voltage 4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 VOL Maximum Low Level Output Voltage 4.5 5.5 4.5 5.5 IIN ICCT IOLD IOHD ICC Maximum Input Leakage Current Additional Max. ICC/Input Minimum Dynamic Output Current Maximum Quiescent Supply Current 5.5 5.5 5.5 5.5 5.5 8.0 0.6 0.001 0.001 1.5 1.5 1.5 1.5 4.49 5.49 74ACT TA = -40C to +85C Unit Conditions
Guaranteed Limits 2.0 2.0 0.8 0.8 4.4 5.4 3.86 4.86 0.1 0.1 0.36 0.36 0.1 2.0 2.0 0.8 0.8 4.4 5.4 3.76 4.76 0.1 0.1 0.44 0.44 1.0 1.5 75 -75 80 V V V VOUT = 0.1 V or VCC - 0.1 V VOUT = 0.1 V or VCC - 0.1 V IOUT = -50 A *VIN = VIL or VIH -24 mA IOH -24 mA IOUT = 50 A *VIN = VIL or VIH 24 mA IOL 24 mA VI = VCC, GND VI = VCC - 2.1 V VOLD = 1.65 V Max VOHD = 3.85 V Min VIN = VCC or GND
V
V
V
A mA mA mA A
* All outputs loaded; thresholds on input associated with output under test. Maximum test duration 2.0 ms, one output loaded at a time.
AC CHARACTERISTICS (For Figures and Waveforms -- See Section 3)
74ACT Symbol Parameter VCC* (V) Min fmax tPLH tPHL Maximum Clock Frequency Propagation Delay CP to On Propagation Delay CP to On 5.0 5.0 5.0 140 2.0 2.0 10 11 TA = +25C CL = 50 pF Typ Max 74ACT TA = -40C to +85C CL = 50 pF Min 120 1.5 1.5 11 12 Max MHz ns ns 3-3 3-6 3-6 Unit Fig. No.
* Voltage Range 5.0 V is 5.0 V 0.5 V.
FACT DATA 5-5
MC74AC378 MC74ACT378
AC OPERATING REQUIREMENTS
74ACT Symbol Parameter VCC* (V) Typ ts th ts th tw Setup Time, HIGH or LOW Dn to CP Hold Time, HIGH or LOW Dn to CP Setup Time, HIGH or LOW E to CP Hold Time, HIGH or LOW E to CP CP Pulse Width HIGH or LOW 5.0 5.0 5.0 5.0 5.0 -0.5 1.0 -0.5 2.5 TA = +25C CL = 50 pF 74ACT TA = -40C to +85C CL = 50 pF Unit Fig. No.
Guaranteed Minimum 1.0 1.5 1.0 3.5 3.0 1.0 1.5 1.0 4.0 3.5 ns ns ns ns ns 3-9 3-9 3-9 3-9 3-6
* Voltage Range 5.0 V is 5.0 V 0.5 V.
CAPACITANCE
Symbol CIN CPD Input Capacitance Power Dissipation Capacitance Parameter Value Typ 4.5 28 Unit pF pF Test Conditions VCC = 5.0 V VCC = 5.0 V
FACT DATA 5-6
MC74AC378 MC74ACT378
OUTLINE DIMENSIONS
N SUFFIX PLASTIC DIP PACKAGE CASE 648-08 ISSUE R
9
-A-
16
B
1 8
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. DIM A B C D F G H J K L M S INCHES MIN MAX 0.740 0.770 0.250 0.270 0.145 0.175 0.015 0.021 0.040 0.70 0.100 BSC 0.050 BSC 0.008 0.015 0.110 0.130 0.295 0.305 0_ 10 _ 0.020 0.040 MILLIMETERS MIN MAX 18.80 19.55 6.35 6.85 3.69 4.44 0.39 0.53 1.02 1.77 2.54 BSC 1.27 BSC 0.21 0.38 2.80 3.30 7.50 7.74 0_ 10 _ 0.51 1.01
F S
C
L
-T- H G D
16 PL
SEATING PLANE
K
J TA
M
M
0.25 (0.010)
M
-A-
D SUFFIX PLASTIC SOIC PACKAGE CASE 751B-05 ISSUE J
9
16
-B-
1 8
P
8 PL
0.25 (0.010)
M
B
S
G F
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. MILLIMETERS MIN MAX 9.80 10.00 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.19 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 INCHES MIN MAX 0.386 0.393 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 BSC 0.008 0.009 0.004 0.009 0_ 7_ 0.229 0.244 0.010 0.019
K C -T-
SEATING PLANE
R
X 45 _
M D
16 PL M
J
0.25 (0.010)
TB
S
A
S
DIM A B C D F G J K M P R
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JAPAN: Nippon Motorola Ltd.; Tatsumi-SPD-JLDC, Toshikatsu Otsuki, 6F Seibu-Butsuryu-Center, 3-14-2 Tatsumi Koto-Ku, Tokyo 135, Japan. 03-3521-8315 HONG KONG: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852-26629298
FACT DATA 5-7
*MC74AC378/D*
MC74AC378/D

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