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INTEGRATED CIRCUITS
74F373 Octal transparent latch (3-State) 74F374 Octal D flip-flop (3-State)
Product data Supersedes data of 1994 Dec 05 2002 Nov 20
Philips Semiconductors
Philips Semiconductors
Product data
Latch/flip-flop
74F373 Octal transparent latch (3-State) 74F374 Octal D-type flip-flop (3-State)
FEATURES
74F373/74F374
* 8-bit transparent latch -- 74F373 * 8-bit positive edge triggered register -- 74F374 * 3-State outputs glitch free during power-up and power-down * Common 3-State output register * Independent register and 3-State buffer operation * SSOP Type II Package
DESCRIPTION
The 74F373 is an octal transparent latch coupled to eight 3-State output devices. The two sections of the device are controlled independently by enable (E) and output enable (OE) control gates. The data on the D inputs is transferred to the latch outputs when the enable (E) input is HIGH. The latch remains transparent to the data input while E is HIGH, and stores the data that is present one set-up time before the HIGH-to-LOW enable transition. The 3-State output buffers are designed to drive heavily loaded 3-State buses, MOS memories, or MOS microprocessors. The active-LOW output enable (OE) controls all eight 3-State buffers independent of the latch operation. When OE is LOW, latched or transparent data appears at the output. When OE is HIGH, the outputs are in high impedance "off" state, which means they will neither drive nor load the bus.
The 74F374 is an 8-bit edge triggered register coupled to eight 3-State output buffers. The two sections of the device are controlled independently by clock (CP) and output enable (OE) control gates. The register is fully edge triggered. The state of the D input, one set-up time before the LOW-to-HIGH clock transition is transferred to the corresponding flip-flop's Q output. The 3-State output buffers are designed to drive heavily loaded 3-State buses, MOS memories, or MOS microprocessors. The active-LOW output enable (OE) controls all eight 3-State buffers independent of the register operation. When OE is LOW, the data in the register appears at the outputs. When OE is HIGH, the outputs are in high impedance "off" state, which means they will neither drive nor load the bus. TYPICAL PROPAGATION DELAY 4.5 ns TYPICAL SUPPLY CURRENT (TOTAL) 35 mA TYPICAL SUPPLY CURRENT (TOTAL) 55 mA
TYPE 74F373
TYPE 74F374
TYPICAL fmax 165 MHz
ORDERING INFORMATION
ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5 V 10%, Tamb = 0 C to +70 C 20-pin plastic DIP 20-pin plastic SOL 20-pin plastic SSOP type II N74F373N, N74F374N N74F373D, N74F374D N74F373DB, N74F374DB SOT146-1 SOT163-1 SOT339-1 PKG DWG #
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
PINS D0 - D7 E (74F373) OE CP (74F374) Q0 - Q7 Data inputs Enable input (active-HIGH) Output enable inputs (active-LOW) Clock pulse input (active rising edge) 3-State outputs DESCRIPTION 74F (U.L.) HIGH / LOW 1.0 / 1.0 1.0 / 1.0 1.0 / 1.0 1.0 / 1.0 150 / 40 LOAD VALUE HIGH/LOW 20 A / 0.6 mA 20 A / 0.6 mA 20 A / 0.6 mA 20 A / 0.6 mA 3.0 mA / 24 mA
NOTE: One (1.0) FAST unit load is defined as: 20 A in the HIGH state and 0.6 mA in the LOW state.
2002 Nov 20
2
Philips Semiconductors
Product data
Latch/flip-flop
74F373/74F374
PIN CONFIGURATION - 74F373
OE 1 Q0 2 D0 3 D1 4 Q1 5 Q2 6 D2 7 D3 8 Q3 9 GND 10 20 VCC 19 Q7 18 D7 17 D6 16 Q6 15 Q5 14 D5 13 D4 12 Q4 11 E
PIN CONFIGURATION - 74F374
OE Q0 D0 D1 Q1 Q2 D2 D3 Q3 1 2 3 4 5 6 7 8 9 20 VCC 19 Q7 18 D7 17 D6 16 Q6 15 Q5 14 D5 13 D4 12 Q4 11 CP
GND 10
SF00250
SF00253
LOGIC SYMBOL - 74F373
3 4 7 8 13 14 17 18
IEC/IEE SYMBOL - 74F374
3
4
7
8
13
14
17
18
D0 D1 D2 D3 D4 D5 D6 D7 11 1 E OE Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
D0 D1 D2 D3 D4 D5 D6 D7 11 1 CP OE Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
2 VCC = Pin 20 GND = Pin 10
5
6
9 12
15
16
19 VCC = Pin 20 GND = Pin 10
2
5
6
9 12
15
16
19
SF00251
SF00254
IEC/IEEE SYMBOL - 74F373
1 11 EN1 EN2 2 5 6 9 12 15 16 19
IEC/IEEE SYMBOL - 74F374
1 11 EN1 C2 2 5 6 9 12 15 16 19
3 4 7 8 13 14 17 18
3 4 7 8 13 14 17 18
2D
1
2D
1
SF00252
SF00255
2002 Nov 20
3
Philips Semiconductors
Product data
Latch/flip-flop
74F373/74F374
LOGIC DIAGRAM FOR 74F373
D0 3 D E E 11 D1 4 D E D2 7 D E D3 8 D E D4 13 D E D5 14 D E D6 17 D E D7 18 D E
Q
Q
Q
Q
Q
Q
Q
Q
OE
1 2 5 Q1 6 Q2 9 Q3 12 Q4 15 Q5 16 Q6 19 Q7
VCC = Pin 20 GND = Pin 10
Q0
SF00256
LOGIC DIAGRAM FOR 74F374
D0 3 D CP Q CP 11 D1 4 D CP Q D2 7 D CP Q D3 8 D CP Q D4 13 D CP Q D5 14 D CP Q D6 17 D CP Q D7 18 D CP Q
OE VCC = Pin 20 GND = Pin 10
1 2 Q0 5 Q1 6 Q2 9 Q3 12 Q4 15 Q5 16 Q6 19 Q7
SF00257
FUNCTION TABLE FOR 74F373
INPUTS OE L L L L L H E H H L L Dn L H l h X X INTERNAL REGISTER L H L H NC NC OUTPUTS Q0 - Q7 L H L H NC Z Hold Disable outputs Latch and read register OPERATING MODE
Enable and read register
H H Dn Dn Z NOTES: H= High-voltage level h= HIGH state must be present one set-up time before the HIGH-to-LOW enable transition L= Low-voltage level l= LOW state must be present one set-up time before the HIGH-to-LOW enable transition NC= No change X= Don't care Z= High impedance "off" state = HIGH-to-LOW enable transition
2002 Nov 20
4
Philips Semiconductors
Product data
Latch/flip-flop
74F373/74F374
FUNCTION TABLE FOR 74F374
INPUTS OE L L L H CP Dn l h X X INTERNAL REGISTER L H NC NC OUTPUTS Q0 - Q7 L H NC Z Hold Disable outputs OPERATING MODE
Load and read register
H Dn Dn Z NOTES: H= High-voltage level h= HIGH state must be present one set-up time before the LOW-to-HIGH clock transition L= Low-voltage level l= LOW state must be present one set-up time before the LOW-to-HIGH clock transition NC= No change X= Don't care Z= High impedance "off" state = LOW-to-HIGH clock transition Not LOW-to-HIGH clock transition =
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 PARAMETER MIN 4.5 2.0 - - - - 0 NOM 5.0 - - - - - - MAX 5.5 - 0.8 -18 -3 24 +70 UNIT V V V mA mA mA C
2002 Nov 20
5
Philips Semiconductors
Product data
Latch/flip-flop
74F373/74F374
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL PARAMETER TEST CONDITIONS1 VCC = MIN, VIL = MAX, , , VIH = MIN, IOH = MAX VCC = MIN, VIL = MAX, , , VIH = MIN, IOL = MAX VCC = MIN, II = IIK VCC = MAX, VI = 7.0 V VCC = MAX, VI = 2.7 V VCC = MAX, VI = 0.5 V VCC = MAX, VO = 2.7 V VCC = MAX, VO = 0.5 V VCC = MAX 74F373 74F374 VCC = MAX -60 35 57 10%VCC 5%VCC 10%VCC 5%VCC LIMITS MIN 2.4 2.7 3.4 0.35 0.35 -0.73 0.50 0.50 -1.2 100 20 -0.6 50 -50 -150 60 86 TYP2 MAX UNIT V V V V V A A mA A A mA mA mA
VO OH
HIGH-level HIGH level output voltage
VO OL VIK II IIH IIL IOZH IOZL IOS ICC
LOW level output voltage LOW-level Input clamp voltage Input current at maximum input voltage High-level input current Low-level input current Off-state output current, high-level voltage applied Off-state output current, low-level voltage applied Short-circuit output current3
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 = 5 V, Tamb = 25 C. 3. Not more than one output should be shorted at a time. For testing IOS, the use of high-speed test apparatus and/or sample-and-hold techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting of a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any sequence of parameter tests, IOS tests should be performed last.
AC ELECTRICAL CHARACTERISTICS
LIMITS SYMBOL PARAMETER TEST CONDITION Tamb = +25 C VCC = +5.0 V CL = 50 pF; RL = 500 MIN tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ fmax tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation delay Dn to Qn Propagation delay E to Qn Output enable time to HIGH or LOW level Output disable time from HIGH or LOW level Maximum clock frequency Propagation delay CP to Qn Output enable time to HIGH or LOW level Output disable time from HIGH or LOW level 74F374 74F373 Waveform 3 Waveform 2 Waveform 6 Waveform 7 Waveform 6 Waveform 7 Waveform 1 Waveform 1 Waveform 6 Waveform 7 Waveform 6 Waveform 7 3.0 2.0 5.0 3.0 2.0 2.0 2.0 2.0 150 3.5 3.5 2.0 2.0 2.0 2.0 TYP 5.3 3.7 9.0 4.0 5.0 5.6 4.5 3.8 165 5.0 5.0 9.0 5.3 5.3 4.3 7.5 7.5 11.0 7.5 6.0 5.5 MAX 7.0 5.0 11.5 7.0 11.0 7.5 6.5 5.0 Tamb = 0 C to +70 C VCC = +5.0 V 10% CL = 50 pF; RL = 500 MIN 3.0 2.0 5.0 3.0 2.0 2.0 2.0 2.0 140 3.0 3.0 2.0 2.0 2.0 2.0 8.5 8.5 12.0 8.5 7.0 6.5 MAX 8.0 6.0 12.0 8.0 11.5 8.5 7.0 6.0 ns ns ns ns ns ns ns ns UNIT
2002 Nov 20
6
Philips Semiconductors
Product data
Latch/flip-flop
74F373/74F374
AC SET-UP REQUIREMENTS
LIMITS Tamb = +25 C SYMBOL PARAMETER TEST CONDITION VCC = +5.0 V CL = 50 pF, RL = 500 MIN tsu (H) tsu (L) th (H) th (L) tw (H) tsu (H) tsu (L) th (H) th (L) tw (H) tw (L) Set-up time, HIGH or LOW level Dn to E Hold time, HIGH or LOW level Dn to E E Pulse width, HIGH Set-up time, HIGH or LOW level Dn to CP Hold time, HIGH or LOW level Dn to CP CP Pulse width, HIGH or LOW 74F374 74F373 Waveform 4 Waveform 4 Waveform 1 Waveform 5 Waveform 5 Waveform 5 0 1.0 3.0 3.0 3.5 2.0 2.0 0 0 3.5 4.0 TYP MAX VCC = +5.0 V 10% CL = 50 pF, RL = 500 MIN 0 1.0 3.0 3.0 4.0 2.0 2.0 0 0 3.5 4.0 MAX ns ns ns ns ns ns Tamb = 0 C to +70 C UNIT
AC WAVEFORMS
For all waveforms, VM = 1.5 V. The shaded areas indicate when the input is permitted to change for predictable output performance.
1/fmax CP V M tw(H) tPLH Qn VM tw(L) tPHL VM VM VM
Dn
VM tPLH
VM tPHL
Qn
VM
VM
SF00260 SF00258
Waveform 3. Propagation delay for data to output
Waveform 1. Propagation delay for clock input to output, clock pulse widths, and maximum clock frequency
Dn
tw(H) E VM tPHL Qn VM VM VM tPLH VM E VM tsu(H) VM th(H) VM tsu(L) VM th(L)
VM
VM
SF00261
Waveform 4. Data set-up time and hold times
SF00259
Waveform 2. Propagation delay for enable to output and enable pulse width
2002 Nov 20
7
Philips Semiconductors
Product data
Latch/flip-flop
74F373/74F374
AC WAVEFORMS (continued)
For all waveforms, VM = 1.5 V. The shaded areas indicate when the input is permitted to change for predictable output performance.
Dn
VM tsu(H)
VM th(H)
VM tsu(L)
VM th(L)
OEn
VM tPZL
VM tPLZ VM VOL +0.3V
CP
VM
VM Qn, Qn
SF00262
Waveform 5. Data set-up time and hold times
SF00264
Waveform 7. 3-State output enable time to LOW level and output disable time from LOW level
OEn
VM tPZH
VM tPHZ VM 0V VOH -0.3V
Qn, Qn
SF00263
Waveform 6. 3-State output enable time to HIGH level and output disable time from HIGH level
TEST CIRCUIT AND WAVEFORMS
SWITCH POSITION TEST SWITCH tPLZ, tPZL closed All other open
PULSE GENERATOR VIN D.U.T. tTLH (tr ) RT CL RL POSITIVE PULSE 10% 90% VM tw tTHL (tf ) AMP (V) 90% VM 10% 0V VCC 7.0V 90% NEGATIVE PULSE VM 10% VOUT RL tTHL (tf ) tw VM 10% tTLH (tr ) 0V 90% AMP (V)
Test circuit for 3-state outputs 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 74F 3.0V VM 1.5V rep. rate 1MHz tw tTLH tTHL 2.5ns
SF00265
500ns 2.5ns
2002 Nov 20
8
Philips Semiconductors
Product data
Latch/flip-flop
74F373/74F374
DIP20: plastic dual in-line package; 20 leads (300 mil)
SOT146-1
2002 Nov 20
9
Philips Semiconductors
Product data
Latch/flip-flop
74F373/74F374
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
2002 Nov 20
10
Philips Semiconductors
Product data
Latch/flip-flop
74F373/74F374
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
SOT339-1
2002 Nov 20
11
Philips Semiconductors
Product data
Latch/flip-flop
74F373/74F374
REVISION HISTORY
Rev _3 Date 20021120 Description Product data; third version (9397 750 10758). Supersedes 74F373_374_2 dated 1994 Dec 05 (9397 750 05119). Engineering Change Notice 853-0369 29206 (date: 20021115). Modifications:
* Corrected ordering information table (from `N74374DB' to `74F374DB'). * Add SSOP20 (SOT339-1) package outline drawing.
_2 19941205 Product data; second version (9397 750 05119). Engineering Change Notice 853-0369 14383 (date: 19941205).
2002 Nov 20
12
Philips Semiconductors
Product data
Latch/flip-flop
74F373/74F374
Data sheet status
Level
I
Data sheet status [1]
Objective data
Product status [2] [3]
Development
Definitions
This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product. This data sheet contains data from the product specification. Philips Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN).
II
Preliminary data
Qualification
III
Product data
Production
[1] Please consult the most recently issued data sheet before initiating or completing a design. [2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com. [3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
Definitions
Short-form specification -- The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition -- Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information -- Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support -- These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes -- Philips Semiconductors reserves the right to make changes in the products--including circuits, standard cells, and/or software--described or contained herein in order to improve design and/or performance. When the product is in full production (status `Production'), relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN). 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.
Contact information
For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825
(c) Koninklijke Philips Electronics N.V. 2002 All rights reserved. Printed in U.S.A. Date of release: 11-02
For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
Document order number:
9397 750 10758
Philips Semiconductors
2002 Nov 20 13

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