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INTEGRATED CIRCUITS
74ALS377 Octal D flip-flop with enable
Product specification IC05 Data Handbook 1991 Feb 08
Philips Semiconductors
Philips Semiconductors
Product specification
Octal D flip-flop with enable
74ALS377
FEATURES
* Ideal for addressable register applications * Enable for address and data synchronization applications * Eight edge-triggered D-type flip-flops * Buffered common clock * See 74ALS273 for master reset version * See 74ALS373 for transparent latch version * See 74ALS374 for 3-State version
DESCRIPTION
The 74ALS377 has eight edge-triggered D-type flip-flops with individual D inputs and Q outputs. The common buffered clock (CP) input loads all flip-flops simultaneously when the Enable (E) is Low. The register is fully edge-triggered. The state of each D input, one setup time before the Low-to-High clock transition, is transferred to the corresponding flip-flop's Q output. The E input must be stable one setup time prior to the Low-to-High clock transition for predictable operation. TYPICAL SUPPLY CURRENT (TOTAL) 15mA
PIN CONFIGURATION
E Q0 1 2 20 VCC 19 Q7 18 D7 17 D6 16 Q6 15 Q5 14 D5 13 D4 12 Q4 11 CP
D0 3 D1 4 Q1 Q2 5 6
D2 7 D3 8 Q3 9
GND 10
SF00350
ORDERING INFORMATION
ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5V 10%, Tamb = 0C to +70C 74ALS377N 74ALS377D 74ALS377DB DRAWING NUMBER
TYPE 74ALS377
TYPICAL fMAX 95MHz
20-pin plastic DIP 20-pin plastic SOL 20-pin plastic SSOP Type II
SOT146-1 SOT163-1 SOT339-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS D0 - D7 CP E Q0 - Q7 Data inputs Clock pulse input (active rising edge) Latch enable input Data outputs DESCRIPTION 74ALS (U.L.) HIGH/LOW 1.0/2.0 1.0/1.0 1.0/1.0 130/240 LOAD VALUE HIGH/LOW 20A/0.2mA 20A/0.1mA 20A/0.1mA 2.6mA/24mA
NOTE: One (1.0) ALS unit load is defined as: 20A in the High state and 0.1mA in the Low state.
LOGIC SYMBOL
3 4 7 8 13 14 17 18
IEC/IEEE SYMBOL
1 11 G1 1C2
D0 11 1 CP E
D1
D2
D3
D4
D5
D6
D7 3 4 7 2D 2 5 6 9 12 15 16 19
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
8 13 14
2 VCC = Pin 20 GND = Pin 10
5
6
9
12
15
16
19
17 18
SF00351
SF00352
1991 Feb 08
2
853-1399 01670
Philips Semiconductors
Product specification
Octal D flip-flop with enable
74ALS377
LOGIC DIAGRAM
D0 3 1 E D1 4 D2 7 D3 8 D4 13 D5 14 D6 17 18 D7
D CP 11
Q
D CP
Q
D CP
Q
D CP
Q
D CP
Q
D CP
Q
D CP
Q
D CP
Q
CP
2 Q0 VCC = Pin 20 GND = Pin 10
5 Q1
6 Q2
9 Q3
12 Q4
15 Q5
16 Q6
19 Q7
SF00353
FUNCTION TABLE
INPUTS E l l h H H= h= L= l= NC= X= = CP X Dn h l X X OUTPUTS Qn H L NC NC Load "1" Load "0" Hold (do nothing) OPERATING MODE
High-voltage level High state must be present one setup time before the Low-to-High clock transition Low-voltage level Low state must be present one setup time before the Low-to-High clock transition No change Don't care Low-to-High clock transition
1991 Feb 08
3
Philips Semiconductors
Product specification
Octal D flip-flop with enable
74ALS377
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free air temperature range.) SYMBOL VCC VIN IIN VOUT IOUT Tamb Tstg Supply voltage Input voltage Input current Voltage applied to output in High output state Current applied to output in Low output state Operating free-air temperature range Storage temperature range PARAMETER RATING -0.5 to +7.0 -0.5 to +7.0 -30 to +5 -0.5 to VCC 48 0 to +70 -65 to +150 UNIT V V mA V mA C C
RECOMMENDED OPERATING CONDITIONS
LIMITS SYMBOL VCC VIH VIL IIK IOH IOL Tamb Supply voltage High-level input voltage Low-level input voltage Input clamp current High-level output current Low-level output current Operating free-air temperature range 0 PARAMETER MIN 4.5 2.0 0.8 -18 -2.6 24 +70 NOM 5.0 MAX 5.5 UNIT V V V mA mA mA C
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL PARAMETER TEST CONDITIONS1 VCC10%, VIL = MAX, , , VIH = MIN VCC = MIN, VIL = MAX, , , VIH = MIN VCC = MIN, II = IIK VCC = MAX, VI = 7.0V VCC = MAX, VI = 2.7V E, CP IIL IO ICC Low-level Low level input current Output current3 ICCH ICCL Dn VCC = MAX, VI = 0 4V MAX 0.4V VCC = MAX, VO = 2.25V VCC = MAX -30 12 20 IOH = -0.4mA IOH = MAX IOL = 12mA IOL = 24mA LIMITS MIN VCC - 2 2.4 3.2 0.25 0.35 -0.73 0.40 0.50 -1.5 0.1 20 -0.1 -0.2 -112 18 29 TYP2 MAX UNIT V V V V V mA A mA mA mA mA mA
VO OH
High level output voltage High-level
VO OL VIK II IIH
Low-level Low level output voltage Input clamp voltage Input current at maximum input voltage High-level input current
Supply current (total)
NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type. 2. All typical values are at VCC = 5V, Tamb = 25C. 3. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
1991 Feb 08
4
Philips Semiconductors
Product specification
Octal D flip-flop with enable
74ALS377
AC ELECTRICAL CHARACTERISTICS
LIMITS SYMBOL PARAMETER TEST CONDITION Tamb = 0C to +70C VCC = +5.0V 10% CL = 50pF, RL = 500 MIN fMAX tPLH tPHL Maximum clock frequency Propagation delay CP to Qn Waveform 1 Waveform 1 65 2.0 3.0 8.0 11.0 MAX MHz ns UNIT
AC SETUP REQUIREMENTS
LIMITS SYMBOL PARAMETER TEST CONDITION Tamb = 0C to +70C VCC = +5.0V 10% CL = 50pF, RL = 500 MIN tsu(H) tsu(L) th(H) th(L) tsu(H) tsu(L) th(H) th(L) tw(H) tw(L) 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 Waveform 2 Waveform 2 Waveform 2 Waveform 2 Waveform 1 5.0 5.0 0.0 0.0 1.0 1.0 3.0 3.0 6.0 8.0 MAX ns ns ns ns ns UNIT
AC WAVEFORMS
For all waveforms, VM = 1.3V. The shaded areas indicate when the input is permitted to change for predictable output performance.
1/fmax CP Dn VM tw(H) tPHL VM tw(L) tPLH E Qn VM VM VM VM VM VM VM tsu VM VM th
SF00294
tsu(L) CP VM
th = 0
tsu(H)
th = 0 VM
Waveform 1. Propagation Delay for Clock Input to Output, Clock Pulse Width, and Maximum Clock Frequency
SC00076
Waveform 2. Data and Enable Setup and Hold Times
1991 Feb 08
5
Philips Semiconductors
Product specification
Octal D flip-flop with enable
74ALS377
TEST CIRCUIT AND WAVEFORMS
VCC NEGATIVE PULSE VIN PULSE GENERATOR RT D.U.T. VOUT 90% VM 10% tTHL (tff) CL RL tw VM 10% tTLH (tr ) 0.3V 90% AMP (V)
tTLH (tr ) 90%
tTHL (tf ) AMP (V) 90% VM tw 10% 0.3V
Test Circuit for Totem-pole Outputs
POSITIVE PULSE 10%
VM
DEFINITIONS: RL = Load resistor; see AC electrical characteristics for value. CL = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value. RT = Termination resistance should be equal to ZOUT of pulse generators.
Input Pulse Definition INPUT PULSE REQUIREMENTS Family Amplitude VM 74ALS 3.5V 1.3V Rep.Rate 1MHz tw 500ns tTLH 2.0ns tTHL 2.0ns
SC00005
1991 Feb 08
6
Philips Semiconductors
Product specification
Octal D flip-flop with enable
74ALS377
DIP20: plastic dual in-line package; 20 leads (300 mil)
SOT146-1
1991 Feb 08
7
Philips Semiconductors
Product specification
Octal D flip-flop with enable
74ALS377
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
1991 Feb 08
8
Philips Semiconductors
Product specification
Octal D flip-flop with enable
74ALS377
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
SOT339-1
1991 Feb 08
9
Philips Semiconductors
Product specification
Octal D flip-flop with enable
74ALS377
DEFINITIONS
Data Sheet Identification
Objective Specification
Product Status
Formative or in Design
Definition
This data sheet contains the design target or goal specifications for product development. Specifications may change in any manner without notice. This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes at any time without notice, in order to improve design and supply the best possible product.
Preliminary Specification
Preproduction Product
Product Specification
Full Production
Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. LIFE SUPPORT APPLICATIONS Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices, or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088-3409 Telephone 800-234-7381 (c) Copyright Philips Electronics North America Corporation 1997 All rights reserved. Printed in U.S.A.
Philips Semiconductors
1991 Feb 08 10

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