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INTEGRATED CIRCUITS
74F1779 8-bit bidirectional binary counter (-State)
Product specification IC15 Data Handbook 1989 Apr 06
Philips Semiconductors
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F1779
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 74F779 for 16-pin version with abbreviated function table
DESCRIPTION
The 74F1779 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 pins (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. The 74F1779 differs from 74F779 in that it has an additional hold mode as described in the Function Table.
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 74F1779
TYPICAL fMAX 130MHz
TYPICAL SUPPLY CURRENT (TOTAL) 100mA
ORDERING INFORMATION
DESCRIPTION 16-pin Plastic DIP 16-pin Plastic SOL COMMERCIAL RANGE VCC = 5V 10%, Tamb = 0C to +70C N74F1779N N74F1779D PACKAGE DRAWING NUMBER SOT38-4 SOT162-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS I/On S0, S1 OE CET CP TC Data inputs Data outputs Select inputs Output Enable input (active Low) Count Enable Trickle input (active Low) Clock input (active rising edge) Terminal Count output (active Low) 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
NOTE: One (1.0) FAST unit load is defined as: 20A in the High state and 0.6mA in the Low state.
1989 Apr 06
2
853-1367 96245
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F1779
LOGIC SYMBOL
11 10
FUNCTION TABLE
INPUTS OPERATING MODE S1
S0 S1 TC 12
S0 X X L
CET X X X H X L L
OE H L H X 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) Hold Count up Count down
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 H L H
VCC=Pin 13 GND=Pin 4
16
1
2
3
5
6
7
8
H
SF01260
L
IEC/IEEE SYMBOL
CTR DIV 256 11 10 14 15 9 LOAD 0 M -- DOWN 3 UP HOLD
0 1 EN4
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.
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 Apr 06
3
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F1779
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 Apr 06
4
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F1779
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 Operating free-air temperature range Storage temperature I/On PARAMETER RATING -0.5 to +7.0 -0.5 to +7.0 -30 to +5 -0.5 to VCC 40 48 0 to +70 -65 to +150 UNIT V V mA V mA mA C C
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 output current Low-level Operating free-air temperature range I/On 0 PARAMETER MIN 4.5 2.0 0.8 -18 -1 -3 20 24 70 NOM 5.0 MAX 5.5 UNIT V V V mA mA mA mA mA C
1989 Apr 06
5
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F1779
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL PARAMETER TEST CONDITIONS1 VCC = MIN, VIL = MAX VIH = MIN VCC = MIN, VIL = MAX VIH = MIN VCC = MIN, VIL = MAX VIH = MIN 10%VCC 5%VCC 10%VCC 5%VCC 10%VCC 5%VCC LIMITS 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 -60 100 VCC = MAX 100 110 -150 145 145 155 3.4 TYP2 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
IO = -1mA 1mA OH
IO = -3mA 3mA OH
VO OL VIK II IIH IIL IIH+IOZH IIL+IOZL IOS ICC
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 Off-state output current Low-level voltage applied Short-circuit output current3 ICCH Supply current (total) ICCL ICCZ I/On others except I/On
IO = MAX OL
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 I/On VCC = MAX, VO = 0.5V VCC = MAX
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 tests. In any sequence of parameter tests, IOS tests should be performed last.
AC ELECTRICAL CHARACTERISTICS
LIMITS SYMBOL PARAMETER TEST CONDITION Tamb = +25C VCC = +5.0V 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 5 115 4.0 5.0 4.0 4.5 2.0 2.5 2.0 4.5 1.0 1.0 TYP 130 6.5 7.0 6.5 6.5 4.0 4.5 4.0 6.5 3.0 4.0 10.0 10.5 9.0 9.0 6.5 7.0 6.5 9.0 6.0 7.0 MAX Tamb = 0C to +70C VCC = +5.0V 10% CL = 50pF, RL = 500 MIN 100 4.0 5.0 3.5 4.0 2.0 2.5 2.0 4.0 1.0 1.0 10.5 11.0 9.5 9.5 7.5 7.5 7.5 9.5 6.5 7.5 MAX MHz ns ns ns ns ns UNIT
1989 Apr 06
6
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F1779
AC SETUP REQUIREMENTS
LIMITS SYMBOL PARAMETER TEST CONDITION Tamb = +25C VCC = +5.0V 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 4.0 3.5 0 0 4.5 7.0 0 0 7.5 8.5 0 0 3.0 4.5 TYP MAX Tamb = 0C to +70C VCC = +5.0V 10% CL = 50pF, RL = 500 MIN 4.5 3.5 0 0 5.0 8.0 0 0 8.0 9.5 0 0 3.0 5.5 MAX 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 tW(H) tPLH I/On tPHL TC VM VM tPLH VM tW(L) tPHL VM CP VM VM
VM ts(H)
VM th(H)
VM ts(L)
VM th(L)
CP
VM
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 Apr 06
7
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F1779
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 Apr 06
8
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F1779
DIP16: plastic dual in-line package; 16 leads (300 mil)
SOT38-4
1989 Apr 06
9
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F1779
SO16: plastic small outline package; 16 leads; body width 7.5 mm
SOT162-1
1989 Apr 06
10
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F1779
NOTES
1989 Apr 06
11
Philips Semiconductors
Product specification
8-bit bidirectional binary counter (3-State)
74F1779
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 1989 All rights reserved. Printed in U.S.A.
Philips Semiconductors
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