Document Outline
- FEATURES
- DESCRIPTION
- PIN CONFIGURATION
- ORDERING INFORMATION
- INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
- LOGIC SYMBOL
- FUNCTION TABLE
- IEC/IEEE SYMBOL
- LOGIC DIAGRAM
- ABSOLUTE MAXIMUM RATINGS
- RECOMMENDED OPERATING CONDITIONS
- DC ELECTRICAL CHARACTERISTICS
- AC ELECTRICAL CHARACTERISTICS
- AC SETUP REQUIREMENTS
- AC WAVEFORMS
- TEST CIRCUIT AND WAVEFORMS
- PACKAGE OUTLINES
- DEFINITIONS
Philips
Semiconductors
74F1779
8-bit bidirectional binary counter (-State)
Product specification
IC15 Data Handbook
1989 Apr 06
INTEGRATED CIRCUITS
Philips Semiconductors
Product specification
74F1779
8-bit bidirectional binary counter (3-State)
2
1989 Apr 06
8531367 96245
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
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
I/O1
I/O0
CP
CET
V
CC
TC
S0
S1
OE
I/O2
I/O3
GND
I/O4
I/O5
I/O7
I/O6
SF01259
TYPE
TYPICAL f
MAX
TYPICAL
SUPPLY CURRENT
(TOTAL)
74F1779
130MHz
100mA
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
10%,
T
amb
= 0
C to +70
C
PACKAGE
DRAWING
NUMBER
16-pin Plastic DIP
N74F1779N
SOT38-4
16-pin Plastic SOL
N74F1779D
SOT162-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F(U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
I/On
Data inputs
3.5/1.0
70
A/0.6mA
I/On
Data outputs
150/40
3.0mA/24mA
S0, S1
Select inputs
1.0/1.0
20
A/0.6mA
OE
Output Enable input (active Low)
1.0/1.0
20
A/0.6mA
CET
Count Enable Trickle input (active Low)
1.0/1.0
20
A/0.6mA
CP
Clock input (active rising edge)
1.0/1.0
20
A/0.6mA
TC
Terminal Count output (active Low)
50/33
1.0mA/20mA
NOTE: One (1.0) FAST unit load is defined as: 20
A in the High state and 0.6mA in the Low state.
Philips Semiconductors
Product specification
74F1779
8-bit bidirectional binary counter (3-State)
1989 Apr 06
3
LOGIC SYMBOL
I/O0 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7
15
16
1
2
3
5
6
7
8
12
TC
9
14
OE
CET
CP
V
CC
=Pin 13
GND=Pin 4
SF01260
S0
S1
11
10
IEC/IEEE SYMBOL
SF01261
EN4
11
15
14
9
[1]
[2]
[4]
[8]
[16]
[32]
[64]
[128]
4, 5, 8 CT=256
4, 5, 8 CT=0
12
16
1
2
3
5
6
7
8
CTR DIV 256
10
0
1
M
0
3
--
EN6
1
2 +/C5
LOAD
DOWN
UP
HOLD
6
FUNCTION TABLE
INPUTS
OPERATING MODE
S1
S0
CET
OE
CP
OPERATING MODE
X
X
X
H
X
I/O0 to I/O7 in High impedance
X
X
X
L
X
Flip-flop outputs appear on I/O lines
L
L
X
H
Parallel load all flip-flops
(not LL)
H
X
Hold (TC held High)
H
H
X
X
Hold
H
L
L
X
Count up
L
H
L
X
Count down
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.
Philips Semiconductors
Product specification
74F1779
8-bit bidirectional binary counter (3-State)
1989 Apr 06
4
LOGIC DIAGRAM
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
TC
D
Q
CP
TOGGLE
Q
CP
DATA
16
1
2
3
5
6
7
8
12
DETAIL A
V
CC
=Pin 13
GND=Pin 4
SF01262
DETAIL A
DETAIL A
DETAIL A
DETAIL A
DETAIL A
DETAIL A
DETAIL A
DETAIL A
Q
Q
LOAD
CET
14
11
10
9
S0
S1
OE
CP
15
LOAD CONTROL
UP
DOWN
Philips Semiconductors
Product specification
74F1779
8-bit bidirectional binary counter (3-State)
1989 Apr 06
5
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
PARAMETER
RATING
UNIT
V
CC
Supply voltage
0.5 to +7.0
V
V
IN
Input voltage
0.5 to +7.0
V
I
IN
Input current
30 to +5
mA
V
OUT
Voltage applied to output in High output state
0.5 to V
CC
V
I
O
Current applied to output in Low output state
TC
40
mA
I
OUT
Current applied to output in Low output state
I/On
48
mA
T
amb
Operating free-air temperature range
0 to +70
C
T
stg
Storage temperature
65 to +150
C
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
SYMBOL
PARAMETER
MIN
NOM
MAX
UNIT
V
CC
Supply voltage
4.5
5.0
5.5
V
V
IH
High-level input voltage
2.0
V
V
IL
Low-level input voltage
0.8
V
I
IK
Input clamp current
18
mA
I
O
High level output current
TC
1
mA
I
OH
High-level output current
I/On
3
mA
I
O
Low level output current
TC
20
mA
I
OL
Low-level output current
I/On
24
mA
T
amb
Operating free-air temperature range
0
70
C
Philips Semiconductors
Product specification
74F1779
8-bit bidirectional binary counter (3-State)
1989 Apr 06
6
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
SYMBOL
PARAMETER
TEST CONDITIONS
1
LIMITS
UNIT
SYMBOL
PARAMETER
TEST CONDITIONS
1
MIN
TYP
2
MAX
UNIT
TC
V
CC
= MIN,
V
IL
= MAX
I
O
= 1mA
10%V
CC
2.5
V
V
O
High level output voltage
TC
V
IL
= MAX
V
IH
= MIN
I
OH
= 1mA
5%V
CC
2.7
3.4
V
V
OH
High-level output voltage
I/On
V
CC
= MIN,
V
IL
= MAX
I
O
= 3mA
10%V
CC
2.4
V
I/On
V
IL
= MAX
V
IH
= MIN
I
OH
= 3mA
5%V
CC
2.7
3.3
V
V
O
Low level output voltage
V
CC
= MIN,
V
IL
= MAX
I
O
= MAX
10%V
CC
0.30
0.50
V
V
OL
Low-level output voltage
V
IL
= MAX
V
IH
= MIN
I
OL
= MAX
5%V
CC
0.35
0.50
V
V
IK
Input clamp voltage
V
CC
= MIN, I
I
= I
IK
0.73
1.2
V
I
Input current at maximum
I/On
V
CC
= 5.5V, V
I
= 5.5V
1
mA
I
I
input voltage
others
V
CC
= 5.5V, V
I
= 7.0V
100
A
I
IH
High-level input current
except
V
CC
= MAX, V
I
= 2.7V
20
A
I
IL
Low-level input current
I/On
V
CC
= MAX, V
I
= 0.5V
0.6
mA
I
IH
+I
OZH
Off-state output current
High-level voltage applied
I/On
V
CC
= MAX, V
O
= 2.7V
70
A
I
IL
+I
OZL
Off-state output current
Low-level voltage applied
I/On
V
CC
= MAX, V
O
= 0.5V
600
A
I
OS
Short-circuit output current
3
V
CC
= MAX
60
150
mA
I
CCH
100
145
mA
I
CC
Supply current (total)
I
CCL
V
CC
= MAX
100
145
mA
I
CCZ
110
155
mA
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 V
CC
= 5V. T
amb
= 25
C.
3. Not more than one output should be shorted at a time. For testing I
OS
, 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, I
OS
tests should be performed last.
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST
CONDITION
T
amb
= +25
C
V
CC
= +5.0V
C
L
= 50pF, R
L
= 500
T
amb
= 0
C to +70
C
V
CC
= +5.0V
10%
C
L
= 50pF, R
L
= 500
UNIT
MIN
TYP
MAX
MIN
MAX
f
MAX
Maximum clock frequency
Waveform 1
115
130
100
MHz
t
PLH
t
PHL
Propagation delay
CP to I/On
Waveform 1
4.0
5.0
6.5
7.0
10.0
10.5
4.0
5.0
10.5
11.0
ns
t
PLH
t
PHL
Propagation delay
CP to TC
Waveform 1
4.0
4.5
6.5
6.5
9.0
9.0
3.5
4.0
9.5
9.5
ns
t
PLH
t
PHL
Propagation delay
CET to TC
Waveform 2
2.0
2.5
4.0
4.5
6.5
7.0
2.0
2.5
7.5
7.5
ns
t
PZH
t
PZL
Output Enable time to
High or Low level
Waveform 4
Waveform 5
2.0
4.5
4.0
6.5
6.5
9.0
2.0
4.0
7.5
9.5
ns
t
PHZ
t
PLZ
Output Enable time from
High or Low level
Waveform 4
Waveform 5
1.0
1.0
3.0
4.0
6.0
7.0
1.0
1.0
6.5
7.5
ns
Philips Semiconductors
Product specification
74F1779
8-bit bidirectional binary counter (3-State)
1989 Apr 06
7
AC SETUP REQUIREMENTS
LIMITS
SYMBOL
PARAMETER
TEST
CONDITION
T
amb
= +25
C
V
CC
= +5.0V
C
L
= 50pF, R
L
= 500
T
amb
= 0
C to +70
C
V
CC
= +5.0V
10%
C
L
= 50pF, R
L
= 500
UNIT
MIN
TYP
MAX
MIN
MAX
t
s
(H)
t
s
(L)
Setup time, High or Low
I/O
n
to CP
Waveform 3
4.0
3.5
4.5
3.5
ns
t
h
(H)
t
h
(L)
Hold time, High or Low
I/O
n
to CP
Waveform 3
0
0
0
0
ns
t
s
(H)
t
s
(L)
Setup time, High or Low
CET to CP
Waveform 3
4.5
7.0
5.0
8.0
ns
t
h
(H)
t
h
(L)
Hold time, High or Low
CET to CP
Waveform 3
0
0
0
0
ns
t
s
(H)
t
s
(L)
Setup time, High or Low
Sn to CP
Waveform 3
7.5
8.5
8.0
9.5
ns
t
h
(H)
t
h
(L)
Hold time, High or Low
Sn to CP
Waveform 3
0
0
0
0
ns
t
w
(H)
t
w
(L)
CP Pulse width,
High or Low
Waveform 1
3.0
4.5
3.0
5.5
ns
AC WAVEFORMS
For all waveforms, V
M
= 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
V
M
V
M
V
M
V
M
1/f
MAX
t
W
(L)
CP
I/On
t
W
(H)
TC
V
M
V
M
SF01263
t
PHL
t
PLH
t
PLH
t
PHL
Waveform 1. Propagation Delay, Clock Input to Output,
Clock Pulse Width, and Maximum Clock Frequency
V
M
V
M
V
M
V
M
t
PLH
t
PHL
CET
TC
SF01264
Waveform 2. Propagation Delay,
CET Input to Terminal Count Output
CP
V
M
V
M
V
M
V
M
t
h
(L)
t
h
(H)
Sn, I/On,
CET
SF01265
V
M
V
M
t
s
(H)
t
s
(L)
Waveform 3. Data Setup and Hold Times
V
M
V
M
V
M
t
PHZ
t
PZH
OE
V
OH
-0.3V
0V
SF01266
I/On
Waveform 4. 3-State Output Enable Time to High Level
and Output Disable Time from High Level
V
M
V
M
V
M
t
PLZ
t
PZL
V
OL
+0.3V
3.5V
OE
SF01267
I/On
Waveform 5. 3-State Output Enable Time to Low Level
and Output Disable Time from Low Level
Philips Semiconductors
Product specification
74F1779
8-bit bidirectional binary counter (3-State)
1989 Apr 06
8
TEST CIRCUIT AND WAVEFORMS
tw
90%
VM
10%
90%
VM
10%
90%
VM
10%
90%
VM
10%
NEGATIVE
PULSE
POSITIVE
PULSE
tw
AMP (V)
0V
0V
tTHL (tf
)
INPUT PULSE REQUIREMENTS
rep. rate
t
w
t
TLH
t
THL
1MHz
500ns
2.5ns
2.5ns
Input Pulse Definition
VCC
family
74F
D.U.T.
PULSE
GENERATOR
RL
CL
RT
VIN
VOUT
Test Circuit for 3-State Outputs
DEFINITIONS:
R
L
= Load resistor;
see AC electrical characteristics for value.
C
L
= Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
R
T
= Termination resistance should be equal to Z
OUT
of
pulse generators.
tTHL (tf
)
tTLH (tr
)
tTLH (tr
)
AMP (V)
amplitude
3.0V
1.5V
V
M
RL
7.0V
SF00777
TEST
SWITCH
t
PLZ
closed
t
PZL
closed
All other
open
SWITCH POSITION
Philips Semiconductors
Product specification
74F1779
8-bit bidirectional binary counter (3-State)
1989 Apr 06
9
DIP16:
plastic dual in-line package; 16 leads (300 mil)
SOT38-4
Philips Semiconductors
Product specification
74F1779
8-bit bidirectional binary counter (3-State)
1989 Apr 06
10
SO16:
plastic small outline package; 16 leads; body width 7.5 mm
SOT162-1
Philips Semiconductors
Product specification
74F1779
8-bit bidirectional binary counter (3-State)
1989 Apr 06
11
NOTES
Philips Semiconductors
Product specification
74F1779
8-bit bidirectional binary counter (3-State)
yyyy mmm dd
12
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.
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.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 940883409
Telephone 800-234-7381
DEFINITIONS
Data Sheet Identification
Product Status
Definition
Objective Specification
Preliminary Specification
Product Specification
Formative or in Design
Preproduction Product
Full Production
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 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.
Copyright Philips Electronics North America Corporation 1989
All rights reserved. Printed in U.S.A.
Philips
Semiconductors
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