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INTEGRATED CIRCUITS
74F779 8-bit bidirectional binary counter (3-State)
Product specification IC15 Data Handbook 1989 Sep 20
Philips Semiconductors
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F779
FEATURES
* Multiplexed 3-State I/O ports for bus oriented applications * Built-in look-ahead carry capability * Center power pins to reduce effects of package inductance * Count frequency 145MHz typical * Supply current 90mA typical * See 74F269 for 24-pin separate I/O port version * See 74F579 for 20-pin version * See 74F1779 for extended function version of the 74F799
DESCRIPTION
The 74F779 is a fully synchronous 8-stage Up/Down Counter with multiplexed 3-State I/O ports for bus-oriented applications. All control functions (hold, count up, count down, synchronous load) are controlled by two mode pine (S0, S1). The device also features carry look-ahead for easy cascading. All state changes are initiated by the rising edge of the clock. When CET is High the data outputs are held in their current state and TC is held High. The TC output is not recommended for use as a clock or asynchronous reset due to the possibility of decoding spikes.
PIN CONFIGURATION
I/O1 1 I/O2 I/O3 GND I/O4 I/O5 2 3 4 5 6 16 I/O0 15 CP 14 CET 13 VCC 12 TC 11 S0 10 S1 9 OE
I/O6 7 I/O7 8
SF01259
TYPE 74F779
TYPICAL fMAX 145MHz
TYPICAL SUPPLY CURRENT (TOTAL) 90mA
ORDERING INFORMATION
DESCRIPTION 16-Pin Plastic DIP 16-Pin Plastic SOL COMMERCIAL RANGE VCC = 5V 10%, Tamb = 0C to +70C N74F779N N74F779D PKG DWG # SOT38-4 SOT 162-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS I/On S0, S1 OE CET CP Data inputs Data outputs Select inputs Output Enable input (active Low) Count Enable Trickle input (active Low) Clock input (active rising edge) DESCRIPTION 74F(U.L.) HIGH/LOW 3.5/1.0 150/40 1.0/1.0 1.0/1.0 1.0/1.0 1.0/1.0 50/33 LOAD VALUE HIGH/LOW 70A/0.6mA 3.0mA/24mA 20A/0.6mA 20A/0.6mA 20A/0.6mA 20A/0.6mA 1.0mA/20mA
TC Terminal Count output (active Low) NOTE: One (1.0) FAST Unit Load is defined as: 20A in the High state and 0.6mA in the Low state.
1989 Sep 20
2
853-0385 97676
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F779
LOGIC SYMBOL
11 10
FUNCTION TABLE
INPUTS S1
S0 S1 TC 12
OPERATING MODE OE H L H X X X CP X X I/O0 to I/O7 in High impedance Flip-flop outputs appear on I/O lines Parallel load all flip-flops Hold (TC held High) Count up Count down
S0 X X L
CET X X X H L L
X X L
14 15 9
CET CP OE I/O0 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7
(not LL) H L H
VCC=Pin 13 GND=Pin 4
16
1
2
3
5
6
7
8
L
SF01260
LOGIC SYMBOL (IEEE/IEC)
CTR DIV 256 11 10 14 15 9 LOAD 0 M -- DOWN 3 UP HOLD
H = High voltage level L = Low voltage level X = Don't care = Low-to-High clock transition (not LL) = S0 and S1 should never be Low voltage level at the same time in the hold mode only.
0 1 EN4
2 +/C5 1- EN6 [1] [2] [4] [8] [16] [32] [64] [128] 4, 5, 8 CT=256 4, 5, 8 CT=0 7 8 12 6 16 1 2 3 5 6
SF01261
1989 Sep 20
3
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F779
LOGIC DIAGRAM
S0 11 S1 10
LOAD CONTROL UP DOWN CP 15
OE
9 16 I/O0 DETAIL A
I/O1
1
DETAIL A
I/O2 2
DETAIL A
I/O3
3
DETAIL A
I/O4
5
DETAIL A
I/O5
6
DETAIL A
I/O6
7
DETAIL A
I/O7 14
8
DETAIL A
CET
TC
12 TOGGLE CP
DATA LOAD
D CP
Q Q
Q Q DETAIL A VCC=Pin 13 GND=Pin 4
SF01262
1989 Sep 20
4
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F779
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limits 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 IO OUT Tamb Tstg Supply voltage Input voltage Input current Voltage applied to output in High output state TC Current applied to output in Low output state I/On Operating free-air temperature range Storage temperature 48 0 to +70 -65 to +150 mA C C PARAMETER RATING -0.5 to +7.0 -0.5 to +7.0 -30 to +5 -0.5 to VCC 40 UNIT V V mA V mA
RECOMMENDED OPERATING CONDITIONS
LIMITS SYMBOL VCC VIH VIL IIK IO OH Supply voltage High-level input voltage Low-level input voltage Input clamp current TC High-level High level output current I/On TC IO OL Tamb Low-level Low level output current I/On Operating free-air temperature range 0 24 70 mA C -3 20 mA mA PARAMETER MIN 4.5 2.0 0.8 -18 -1 NOM 5.0 MAX 5.5 V V V mA mA UNIT
1989 Sep 20
5
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F779
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.) LIMITS SYMBOL PARAMETER TEST CONDITIONSNO TAG VCC = MIN, VIL = MAX VIH = MIN VCC = MIN, VIL = MAX VIH = MIN VCC = MIN, VIL = MAX VIH = MIN 10%VCC IO = -1mA 1mA OH 5%VCC 10%VCC IO = -3mA 3mA OH 5%VCC 10%VCC IO = MAX OL 5%VCC MIN 2.5 2.7 2.4 2.7 3.3 0.30 0.35 -0.73 0.50 0.50 -1.2 1 100 20 -0.6 70 -600 -60 82 VCC = MAX 91 97 -150 116 128 136 3.4 TYP
NO TAG
MAX
UNIT
V V V V V V V mA A A mA A A mA mA mA mA
TC VO OH High-level High level output voltage I/On
VO OL VIK II IIH IIL IIH+IOZH IIL+IOZL IOS
Low-level Low level output voltage 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 I/On Off-state output current Low-level voltage applied Short-circuit output currentNO TAG ICCH I/On others except I/On
VCC = MIN, II = IIK VCC = 5.5V, VI = 5.5V VCC = 5.5V, VI = 7.0V VCC = MAX, VI = 2.7V VCC = MAX, VI = 0.5V VCC = MAX, VO = 2.7V VCC = MAX, VO = 0.5V VCC = MAX
ICC
Supply current (total)
ICCL ICCZ
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. 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 CONDITIONS Tamb = +25C VCC = +5V CL = 50pF, RL = 500 MIN fMAX tPLH tPHL tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ Maximum clock frequency Propagation delay CP to I/On Propagation delay CP to TC Propagation delay CET to TC Output Enable time to High or Low level Output Enable time from High or Low level Waveform 1 Waveform 1 Waveform 1 Waveform 2 Waveform 4 Waveform 5 Waveform 4 Waveform 5 125 4.5 5.5 4.5 4.5 3.0 3.0 2.5 4.5 1.0 1.0 TYP 145 7.0 8.0 7.0 7.0 4.5 5.5 4.5 6.5 3.0 4.0 10.5 10.5 9.0 9.0 6.5 7.5 7.0 9.0 6.5 7.0 MAX Tamb = 0C to +70C VCC = +5V 10% CL = 50pF, RL = 500 MIN 115 4.5 5.5 4.5 4.5 2.5 2.5 2.5 4.5 1.0 1.0 11.0 11.0 10.0 10.0 7.5 8.0 8.0 9.5 8.0 8.0 MAX MHz ns ns ns ns ns ns ns ns ns ns UNIT
1989 Sep 20
6
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F779
AC SETUP REQUIREMENTS
LIMITS SYMBOL PARAMETER TEST CONDITIONS Tamb = +25C VCC = +5V CL = 50pF, RL = 500 MIN ts(H) ts(L) th(H) th(L) ts(H) ts(L) th(H) th(L) ts(H) ts(L) th(H) th(L) tw(H) tw(L) Setup time, High or Low I/On to CP Hold time, High or Low I/On to CP Setup time, High or Low CET to CP Hold time, High or Low CET to CP Setup time, High or Low Sn to CP Hold time, High or Low Sn to CP CP Pulse width, High or Low Waveform 3 Waveform 3 Waveform 3 Waveform 3 Waveform 3 Waveform 3 Waveform 1 5.0 5.0 1.0 1.0 5.0 5.5 0 0 8.0 8.0 0 0 4.0 4.0 TYP MAX Tamb = 0C to +70C VCC = +5V 10% CL = 50pF, RL = 500 MIN 5.0 5.0 1.0 1.0 5.0 6.0 0 0 8.5 8.5 0 0 4.0 4.0 MAX ns ns ns ns ns ns ns ns ns ns ns ns ns ns UNIT
AC WAVEFORMS
For all waveforms, VM = 1.5V. The shaded areas indicate when the input is permitted to change for predictable output performance.
1/fMAX
Sn, I/On, CET VM
VM ts(H)
VM th(H)
VM ts(L)
VM th(L)
CP
VM tW(H) tPLH tW(L)
tPHL VM VM tPLH VM VM
CP
VM
VM
I/On tPHL TC
SF01265
Waveform 3. Data Setup and Hold Times
SF01263
OE
VM tPZH
VM tPHZ VM 0V VOH -0.3V
Waveform 1. Propagation Delay, Clock Input to Output, Clock Pulse Width, and Maximum Clock Frequency
I/On CET VM tPHL TC VM VM tPLH VM
SF01266
Waveform 4. 3-State Output Enable Time to High Level and Output Disable Time from High Level
SF01264
OE
VM tPZL
VM tPLZ 3.5V VM
Waveform 2. Propagation Delay CET Input to Terminal Count Output
I/On
VOL +0.3V
SF01267
Waveform 5. 3-State Output Enable Time to Low Level and Output Disable Time from Low Level
1989 Sep 20
7
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F779
TEST CIRCUIT AND WAVEFORMS
VCC 7.0V VIN PULSE GENERATOR RT D.U.T. VOUT RL NEGATIVE PULSE 90% VM 10% tTHL (tf ) CL RL tTLH (tr ) 90% POSITIVE PULSE 10% tTHL (tf ) AMP (V) 90% VM tw 10% 0V tw VM 10% tTLH (tr ) 0V AMP (V)
90%
Test Circuit for 3-State Outputs SWITCH POSITION TEST tPLZ tPZL All other SWITCH closed closed open
VM
Input Pulse Definition
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 REQUIREMENTS family amplitude VM 74F 3.0V 1.5V rep. rate 1MHz tw 500ns tTLH 2.5ns tTHL 2.5ns
SF00777
1989 Sep 20
8
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F779
DIP16: plastic dual in-line package; 16 leads (300 mil)
SOT38-4
1989 Sep 20
9
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F779
SO16: plastic small outline package; 16 leads; body width 7.5 mm
SOT162-1
1989 Sep 20
10
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F779
NOTES
1989 Sep 20
11
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F779
Data sheet status
Data sheet status Objective specification Preliminary specification Product specification Product status Development Qualification Definition [1] This data sheet contains the design target or goal specifications for product development. Specification 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 chages 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.
Production
[1] Please consult the most recently issued datasheet before initiating or completing a design.
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 134). 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, 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. 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 1998 All rights reserved. Printed in U.S.A. print code Document order number: Date of release: 10-98 9397-750-05179
Philips Semiconductors
yyyy mmm dd 12

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