Philips
Semiconductors
74ALVCH16825
18-bit buffer/driver (3-State)
Product specification
IC24 Data Handbook
1998 Jul 27
INTEGRATED CIRCUITS
Philips Semiconductors
Product specification
74ALVCH16825
18-bit buffer/driver (3-State)
2
1998 Jul 27
853-2097 19785
FEATURES
Wide supply voltage range of 1.2V to 3.6V
Complies with JEDEC standard no. 8-1A.
CMOS low power consumption
Direct interface with TTL levels
Current drive
24 mA at 3.0 V
MULTIBYTE
TM
flow-through standard pin-out architecture
Low inductance multiple V
CC
and GND pins for minimum noise
and ground bounce
All data inputs have bus hold
Output drive capability 50
transmission lines @ 85
C
DESCRIPTION
The 74ALVCH16825 is an 18bit non-inverting buffer/driver with
3-State outputs for bus-oriented applications.
The 74ALVCH16825 consists of two 9-bit sections with separate
output enable signals. For either 9-bit buffer section, the two output
enable (1OE1 and 1OE2 or 2OE1 and 2OE2) inputs must both be
LOW for corresponding D outputs to be active. If either output
enable input is HIGH, the outputs of that 9-buffer section are in the
high impedance state.
The 74ALVCH16825 has active bus hold circuitry which is provided
to hold unused or floating data inputs at a valid logic level. This
feature eliminates the need for external pull-up or pull-down
resistors.
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
1OE1
1Y
1
1Y
1
1Y
2
1Y
3
1Y
4
1Y
5
1Y
6
GND
V
CC
GND
1Y
7
1Y
8
GND
GND
2Y
0
2Y
1
GND
2Y
2
2Y
3
2Y
4
V
CC
2Y
5
2Y
6
GND
2Y
7
2OE1
1A
0
1A
1
GND
1A
2
1A
3
V
CC
1A
4
1A
5
1A
6
GND
1A
7
1A
8
GND
GND
2A
0
2A
1
GND
2A
2
2A
3
2A
4
V
CC
2A
5
2A
6
GND
2A
7
2A
8
2Y
8
2OE2
1OE2
SH00139
QUICK REFERENCE DATA
GND = 0V; T
amb
= 25
C; t
r
= t
f
2.5ns
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
t
PHL
/t
PLH
Propagation delay
CP to Qn
V
CC
= 2.5V, C
L
= 30pF
V
CC
= 3.3V, C
L
= 50pF
2.0
2.0
ns
C
I
Input capacitance
4.0
pF
C
PD
Power dissipation capacitance per latch
V
I
= GND to V
CC
1
Output enabled
19
pF
C
PD
Power dissi ation ca acitance er latch
V
I
= GND to V
CC
1
Output disabled
3
F
NOTES:
1. C
PD
is used to determine the dynamic power dissipation (P
D
in
W):
P
D
= C
PD
V
CC
2
f
i
+
S
(C
L
V
CC
2
f
o
) where: f
i
= input frequency in MHz; C
L
= output load capacitance in pF;
f
o
= output frequency in MHz; V
CC
= supply voltage in V;
S
(C
L
V
CC
2
f
o
) = sum of outputs.
ORDERING INFORMATION
PACKAGES
TEMPERATURE
RANGE
OUTSIDE NORTH
AMERICA
NORTH AMERICA
DRAWING
NUMBER
56-Pin Plastic Thin Shrink Small Outline (TSSOP) Type II
40
C to +85
C
74ALVCH16825 DGG
ACH16825 DGG
SOT364-1
Philips Semiconductors
Product specification
74ALVCH16825
18-bit buffer/driver (3-State)
1998 Jul 27
3
PIN DESCRIPTION
PIN NUMBER
SYMBOL
NAME AND FUNCTION
1
1OE1
Output enable input
56
1OE2
(active LOW)
55, 54, 52, 51, 49,
48, 47, 45, 44
1A0 to 1A8
Data inputs
2, 3, 5, 6, 8,
9, 10, 12, 13
1Y0 to 1Y8
Data outputs
4, 11, 14, 15, 18, 25,
32, 39, 42, 43, 46, 53
GND
Ground (0V)
7, 22, 35, 50
V
CC
Positive supply voltage
28
2OE1
Output enable input
29
2OE2
(active LOW)
43, 42, 41, 40, 38,
37, 36, 34, 33, 31
2A0 to 2A8
Data inputs
16, 17, 19, 20, 21,
23, 24, 26, 27
2Y0 to 2Y8
Data outputs
LOGIC SYMBOL
55
54
52
51
49
48
47
45
44
41
40
38
37
36
34
33
31
30
3
5
6
8
9
10
12
13
16
17
19
20
21
23
24
26
1A
0
1A
1
1A
2
1A
3
1A
4
1A
5
1A
6
1A
7
1A
8
2A
0
2A
1
2A
2
2A
3
2A
4
2A
5
2A
6
2A
7
1Y
0
1Y
1
1Y
2
1Y
3
1Y
4
1Y
5
1Y
6
1Y
7
1Y
8
2Y
0
2Y
1
2Y
2
2Y
3
2Y
4
2Y
5
2Y
6
2Y
7
2
2A
8
2Y
8
27
SH00142
1OE1
1OE2
2OE1
2OE2
1
56
28
29
FUNCTION TABLE
INPUTS
OUTPUT
nOE1
nOE2
A
Y
L
L
L
L
L
L
H
H
H
X
X
Z
X
H
X
Z
H
=
HIGH voltage level
L
=
LOW voltage level
X
=
Don't care
Z
=
High impedance "off" state
LOGIC SYMBOL (IEEE/IEC)
1, 1
1, 2
56
28
55
54
52
51
49
48
47
45
44
41
40
38
37
36
34
33
31
30
3
5
6
8
9
10
12
13
16
17
19
20
21
23
24
26
1
EN1
1A
0
1A
1
1A
2
1A
3
1A
4
1A
5
1A
6
1A
7
1A
8
2A
0
2A
1
2A
2
2A
3
2A
4
2A
5
2A
6
2A
7
1Y
0
1Y
1
1Y
2
1Y
3
1Y
4
1Y
5
1Y
6
1Y
7
1Y
8
2Y
0
2Y
1
2Y
2
2Y
3
2Y
4
2Y
5
2Y
6
2Y
7
SH00141
29
2OE2
2OE1
1OE2
1OE1
2
2A
8
2Y
8
27
EN2
&
&
Philips Semiconductors
Product specification
74ALVCH16825
18-bit buffer/driver (3-State)
1998 Jul 27
4
LOGIC DIAGRAM
nY
n
TO 8 OTHER CHANNELS
nA
n
nOE2
nOE1
SH00140
BUS HOLD CIRCUIT
To internal circuit
V
CC
Data Input
SW00044
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
CONDITIONS
MIN
MAX
UNIT
V
CC
DC supply voltage 2.5V range (for max. speed
performance @ 30 pF output load)
2.3
2.7
V
V
CC
DC supply voltage 3.3V range (for max. speed
performance @ 50 pF output load)
3.0
3.6
V
V
I
DC Input voltage range
0
V
CC
V
V
O
DC output voltage range
0
V
CC
V
T
amb
Operating free-air temperature range
40
+85
C
t
r
, t
f
Input rise and fall times
V
CC
= 2.3 to 3.0V
V
CC
= 3.0 to 3.6V
0
0
20
10
ns/V
ABSOLUTE MAXIMUM RATINGS
In accordance with the Absolute Maximum Rating System (IEC 134)
Voltages are referenced to GND (ground = 0V)
SYMBOL
PARAMETER
CONDITIONS
RATING
UNIT
V
CC
DC supply voltage
0.5 to +4.6
V
I
IK
DC input diode current
V
I
t
0
50
mA
V
I
DC input voltage
For control pins
2
0.5 to +4.6
V
V
I
DC in ut voltage
For data inputs
2
0.5 to V
CC
+0.5
V
I
OK
DC output diode current
V
O
u
V
CC
or V
O
t
0
"
50
mA
V
O
DC output voltage
Note 2
0.5 to V
CC
+0.5
V
I
O
DC output source or sink current
V
O
= 0 to V
CC
"
50
mA
I
GND
, I
CC
DC V
CC
or GND current
"
100
mA
T
stg
Storage temperature range
65 to +150
C
P
TOT
Power dissipation per package
plastic medium-shrink (SSOP)
plastic thin-medium-shrink (TSSOP)
For temperature range: 40 to +125
C
above +55
C derate linearly with 11.3 mW/K
above +55
C derate linearly with 8 mW/K
850
600
mW
NOTE:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
Philips Semiconductors
Product specification
74ALVCH16825
18-bit buffer/driver (3-State)
1998 Jul 27
5
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions. Voltage are referenced to GND (ground = 0 V).
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Temp = -40
C to +85
C
UNIT
MIN
TYP
1
MAX
V
HIGH level Input voltage
V
CC
= 2.3 to 2.7V
1.7
1.2
V
V
IH
HIGH level Input voltage
V
CC
= 2.7 to 3.6V
2.0
1.5
V
V
LOW level Input voltage
V
CC
= 2.3 to 2.7V
1.2
0.7
V
V
IL
LOW level Input voltage
V
CC
= 2.7 to 3.6V
1.5
0.8
V
V
CC
= 2 3 to 3 6V; V = V
or V ; I
O
= 100
A
V
CC
0 2
V
CC
V
CC
= 2.3 to 3.6V; V
I
= V
IH
or V
IL
; I
O
= 100
A
V
CC
*
0.2
V
CC
V
CC
= 2.3V; V
I
= V
IH
or V
IL
; I
O
= 6mA
V
CC
*
0.3
V
CC
*
0.08
V
O
HIGH level output voltage
V
CC
= 2.3V; V
I
= V
IH
or V
IL
; I
O
= 12mA
V
CC
*
0.6
V
CC
*
0.26
V
V
OH
HIGH level output voltage
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= 12mA
V
CC
*
0.5
V
CC
*
0.14
V
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= 12mA
V
CC
*
0.6
V
CC
*
0.09
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= 24mA
V
CC
*
1.0
V
CC
*
0.28
V
= 2 3 to 3 6V; V = V
or V ; I = 100
A
GND
0 20
V
V
CC
= 2.3 to 3.6V; V
I
= V
IH
or V
IL
; I
O
= 100
A
GND
0.20
V
V
CC
= 2.3V; V
I
= V
IH
or V
IL
; I
O
= 6mA
0.07
0.40
V
V
OL
LOW level output voltage
V
CC
= 2.3V; V
I
= V
IH
or V
IL
; I
O
= 12mA
0.15
0.70
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= 12mA
0.14
0.40
V
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= 24mA
0.27
0.55
V
CC
= 2 3 to 3 6V;
I
I
Input leakage current
V
CC
= 2.3 to 3.6V;
V
V
or GND
0.1
5
A
I
g
V
I
= V
CC
or GND
I
OZ
3-State output OFF-state current
V
CC
= 2.3 to 3.6V; V
I
= V
IH
or V
IL
;
V
O
= V
CC
or GND
0.1
10
A
I
CC
Quiescent supply current
V
CC
= 2.3 to 3.6V; V
I
= V
CC
or GND; I
O
= 0
0.2
40
A
I
CC
Additional quiescent supply current
V
CC
= 2.3V to 3.6V; V
I
= V
CC
0.6V; I
O
= 0
150
750
A
I
BHL
2
Bus hold LOW sustaining current
V
CC
= 2.3V; V
I
= 0.7V
45
A
I
BHL
2
Bus hold LOW sustaining current
V
CC
= 3.0V; V
I
= 0.8V
75
150
A
I
BHH
2
Bus hold HIGH sustaining current
V
CC
= 2.3V; V
I
= 1.7V
45
A
I
BHH
2
Bus hold HIGH sustaining current
V
CC
= 3.0V; V
I
= 2.0V
75
175
A
I
BHLO
2
Bus hold LOW overdrive current
V
CC
= 3.6V
500
A
I
BHHO
2
Bus hold HIGH overdrive current
V
CC
= 3.6V
500
A
NOTES:
1. All typical values are at T
amb
= 25
C.
2. Valid for data inputs of bus hold parts.
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