•High impedance NPN base inputs for reduced loading (20µA in
High and Low states)
•I
is 20µA vs FAST family spec of 600µA and 1000µA for
IL
AMD 29827/29828 series
•Ideal where high speed, light bus loading and increased fan-in are
required
DESCRIPTION
The 74F827 and 74F828 10-Bit buffers provide high performance
bus interface buffering for wide data/address paths or buses
carrying parity. They have NOR Output Enables (OE
maximum control flexibility.
The 74F827 and 74F828 are functionally and pin compatible to AMD
AM29827 and AM29828. The 74F828 is an inverting version of
74F827.
•Controlled rise and fall times to minimize ground bounce
•Glitch free power-up in 3-State
•Flow through pinout architecture for microprocessor oriented
One (1.0) FAST Unit Load is defined as: 20µA in the High state and 0.6 mA in the Low state.
COMMERCIAL RANGE
VCC = 5V10%; TA = 0°C to +70°C
74F(U.L.)
HIGH/LOW
TYPICAL PROPAGATION
DELAY
DRAWING NUMBER
0, OE1) for
TYPICAL SUPPL Y
CURRENT
(TOTAL)
LOAD VALUE
HIGH/LOW
1994 Dec 05853-0880 14382
2
Page 3
Philips Semiconductors Product specification
74F827, 74F828Buffers
PIN CONFIGURATION - 74F827
1
0
OE
2
D
0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
10
D8
11
D9
1213
GND
LOGIC SYMBOL - 74F827
234567891011
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9
1
OE0
OE1
13
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9
24
V
23
Q0
22
Q1
21
Q2
20
Q3
19
Q4
18
Q5
17
Q6
16
Q7
15
Q8
14
Q9
OE
SF00266
CC
PIN CONFIGURATION - 74F828
1
0
OE
2
D0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
10
D8
11
D9
1213
1
GND
24
V
23
Q0
22
Q
21
Q
20
Q
19
Q
18
Q
17
Q6
16
Q
15
Q
14
Q
OE
SF00269
CC
1
2
3
4
5
7
8
9
1
LOGIC SYMBOL - 74F828
234567891011
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9
1
OE0
OE1
13
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9
23 22 21 20 19 18 17 16 15 14
VCC = Pin 24
GND = Pin 12
SF00267
LOGIC SYMBOL (IEEE/IEC) - 74F827
1
13
223
322
421
520
619
718
817
916
1015
1114
&
EN1
1
SF00268
23 22 21 20 19 18 17 16 15 14
VCC = Pin 24
GND = Pin 12
SF00270
LOGIC SYMBOL (IEEE/IEC) - 74F828
1
13
2
322
421
520
619
718
817
916
1015
1114
&
EN1
1
23
SF00271
1994 Dec 05
3
Page 4
Philips Semiconductors Product specification
INPUTS
74F827, 74F828Buffers
LOGIC DIAGRAM 74F827
D0
2
1
OE0
13
OE1
VCC = Pin 24
GND = Pin 12
23
Q0
LOGIC DIAGRAM 74F828
D0
2
1
OE0
13
OE1
VCC = Pin 24
GND = Pin 12
23
0
Q
D1
Q1
D1
Q
3
22
3
22
1
D2
Q2
D2
Q2
D3
4
21
4
21
5
20
Q3
D3
5
20
Q3
D4
Q4
D4
Q4
D5
6
19
6
19
7
18
Q5
D5
7
18
Q5
D6
Q6
D6
Q6
D7
8
17
8
17
9
16
Q7
D7
9
16
Q7
D8
Q8
D8
Q8
D9
10
15
10
15
11
14
Q9
SF00272
D9
11
14
Q9
SF00280
FUNCTION TABLE
OUTPUTS
74F827 74F828
OPERATING MODE
OEnDnQnQn
LLLHTransparent
LHHLTransparent
HXZZHigh impedance
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance “off” state
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
V
CC
V
IN
I
IN
V
OUT
I
OUT
T
A
T
stg
Supply voltage–0.5 to +7.0V
Input voltage–0.5 to +7.0V
Input current–30 to +5mA
Voltage applied to output in High output state–0.5 to +V
Current applied to output in Low output state128mA
Operating free-air temperature range0 to + 70°C
Storage temperature range–65 to + 150°C
PARAMETERRATINGUNIT
CC
V
1994 Dec 05
4
Page 5
Philips Semiconductors Product specification
SYMBOL
PARAMETER
UNIT
SYMBOL
PARAMETER
TEST CONDITIONS
1
UNIT
SYMBOL
PARAMETER
TESTCONDITIONS
MIN
TYP2MAX
UNIT
MIN
TYP
MAX
V
IL
MAX
I
15mA
VOHHigh-level out ut voltage
V
IL
MAX
I
24mA
VOLLow-level out ut voltage
V
IL
MAX
I
I
y
74F827, 74F828Buffers
RECOMMENDED OPERATING CONDITIONS
LIMITS
MinNomMax
V
CC
V
IH
V
I
IK
I
OH
I
OL
T
amb
DC ELECTRICAL CHARACTERISTICS
Over recommended operating free-air temperature range unless otherwise noted.
Input current at maximum input voltageVCC = 0.0V, VI = 7.0V100µA
I
V
IH
= MIN
,
OL = MAX
IK
10%V
5%V
10%V
5%V
10%V
5%V
CC
CC
CC
CC
CC
CC
High-level input currentVCC = MAX, VI = 2.7V20µA
Low-level input currentVCC = MAX, VI = 0.5V–20µA
IL
Off-state output current,
High voltage applied
Off-state output current,
Low voltage applied
Short circuit output current
74F827
Supply current
(total)
74F828
3
I
CCH
I
CCL
I
CCZ
I
CCH
I
CCL
I
CCZ
VCC = MAX, VO = 2.7V50µA
VCC = MAX, VO = 0.5V–50µA
VCC = MAX–100–225mA
VCC = MAX
VCC = MAX
2.4V
2.43.3V
2.0V
2.0V
0.55V
0.420.55V
–0.73–1.2V
5070mA
70100mA
6090mA
3045mA
6585mA
5570mA
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under operating conditions for the applicable type.
2. All typical values are at V
3. Not more than one output should be shorted at one time. For testing I
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
= 5V, TA = 25°C.
CC
, the use of high-speed test apparatus and/or sample-and-hold
OS
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, I
tests should be performed last.
OS
1994 Dec 05
5
Page 6
Philips Semiconductors Product specification
74F827, 74F828Buffers
AC CHARACTERISTICS
LIMITS
T
SYMBOLPARAMETER
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation delay
Dn to Q
n
Output enable time
OE
to Q
n
n
Output disable time
OE
to Q
n
n
Propagation delay
Dn to Q
n
Output enable time
OEn to Q
n
Output disable time
OEn to Q
n
74F827
74F828
Waveform 1
Waveform 3
Waveform 4
Waveform 3
Waveform 4
Waveform 2
Waveform 3
Waveform 4
Waveform 3
Waveform 4
= +25°C
amb
VCC = 5V
C
= 50pF
L
RL = 500Ω
MinTypMaxMinMax
2.0
2.0
5.0
4.0
2.5
2.5
2.0
1.0
6.0
5.0
2.5
1.5
5.5
4.5
8.0
6.0
5.0
5.0
6.0
3.0
8.0
7.0
5.0
4.0
8.5
8.5
12.0
10.5
8.0
8.0
8.5
7.0
11.5
10.5
8.5
7.0
T
= 0 °C to +70°C
amb
VCC = 5V 10%
C
= 50pF
L
RL = 500Ω
2.0
2.0
4.5
4.0
2.0
2.0
2.0
1.0
5.5
4.5
2.0
1.5
9.0
9.0
14.0
11.5
8.5
8.5
9.5
8.0
14.0
12.0
9.0
8.0
UNIT
ns
ns
ns
ns
ns
ns
AC CHARACTERISTICS
for 1 Output switching with CL = 300pF and RL = 500Ω load
SYMBOLPARAMETER
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation delay
Dn to Q
n
Output enable time
OEn to Q
n
Output disable time
OEn to Q
n
Propagation delay
Dn to Q
n
Output enable time
OEn to Q
n
Output disable time
OEn to Q
n
74F827
74F828
Waveform 1
Waveform 3
Waveform 4
Waveform 3
Waveform 4
Waveform 2
Waveform 3
Waveform 4
Waveform 3
Waveform 4
LIMITS
T
= +25°C
amb
VCC = 5V
CL = 300pF
RL = 500Ω
T
= 0 °C to +70°C
amb
VCC = 5V 10%
CL = 300pF
RL = 500Ω
MINTypMaxMINMax
9.5
7.5
15.0
9.5
15.0
9.5
10.0
6.0
15.5
10.5
15.0
10.0
13.0
10.0
20.0
13.0
19.0
13.5
13.0
9.0
19.0
13.0
18.0
13.0
14.0
11.0
21.0
14.0
20.0
14.0
14.0
10.0
21.0
14.0
20.0
14.5
UNIT
ns
ns
ns
ns
ns
ns
1994 Dec 05
6
Page 7
Philips Semiconductors Product specification
74F827, 74F828Buffers
AC CHARACTERISTICS
for 10 Outputs switching with CL = 300pF and RL = 500Ω load
LIMITS
T
SYMBOLPARAMETER
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation delay
Dn to Q
n
Output enable time
OEn to Q
n
Output disable time
OEn to Q
n
Propagation delay
Dn to Q
n
Output enable time
OEn to Q
n
Output disable time
OEn to Q
n
74F827
74F828
Waveform 1
Waveform 3
Waveform 4
Waveform 3
Waveform 4
Waveform 2
Waveform 3
Waveform 4
Waveform 3
Waveform 4
= +25°C
amb
VCC = 5V
CL = 50pF
RL = 500Ω
MINTypMaxMINMax
12.0
14.0
15.0
17.0
15.0
12.5
10.0
10.0
18.0
15.0
16.5
11.5
16.0
17.0
20.0
21.0
19.0
15.5
17.0
13.5
21.0
18.0
19.5
14.5
T
= 0 °C to +70°C
amb
VCC = 5V 10%
CL = 50pF
RL = 500Ω
17.0
18.0
21.0
21.5
20.0
16.0
18.0
14.0
23.0
19.0
22.5
15.0
UNIT
ns
ns
ns
ns
ns
ns
AC WAVEFORMS
For all waveforms, VM = 1.5V
Dn
Qn
Waveform 1. Propagation Delay for Non-Inverting Output
Dn
Qn
Waveform 2. Propagation Delay for Inverting Output
V
M
t
PLH
V
M
t
PHL
V
V
M
t
PHL
V
M
V
M
t
PLH
V
M
M
V
SF00125
SF00282
OEn
M
Qn, Qn
V
t
PZH
M
V
M
t
PHZ
V
M
VOH -0.3V
0V
SF00263
Waveform 3. 3-State Output Enable Time to High Level
and Output Disable Time from High Level
OEn
Qn, Q
n
V
t
PZL
M
V
V
M
t
PLZ
M
VOL +0.3V
SF00264
Waveform 4. 3-State Output Enable Time to Low Level
and Output Disable Time from Low Level
1994 Dec 05
7
Page 8
Philips Semiconductors Product specification
74F827, 74F828Buffers
V
CC
R
PULSE
GENERATOR
V
IN
R
T
D.U.T.
V
OUT
L
C
R
L
L
Test Circuit for Open Collector Outputs
SWITCH POSITION
TESTSWITCH
t
t
PLZ
PZL
closed
closed
All otheropen
DEFINITIONS:
R
= Load resistor;
L
see AC electrical characteristics for value.
= Load capacitance includes jig and probe capacitance;
SO24: plastic small outline package; 24 leads; body width 7.5 mmSOT137-1
1994 Dec 05
10
Page 11
Philips SemiconductorsProduct specification
74F827, 74F828Buffers
SSOP24: plastic shrink small outline package; 24 leads; body width 5.3 mmSOT340-1
1994 Dec 05
11
Page 12
Philips Semiconductors Product specification
74F827, 74F828Buffers
DEFINITIONS
Data Sheet IdentificationProduct StatusDefinition
Objective Specification
Preliminary Specification
Product Specification
Formative or in Design
Preproduction Product
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 APPLICA TIONS
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
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.
Philips Semiconductors and Philips Electronics North America Corporation
register eligible circuits under the Semiconductor Chip Protection Act.
Copyright Philips Electronics North America Corporation 1994
All rights reserved. Printed in U.S.A.
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