INTEGRATED CIRCUITS
74ALVCH16825
18-bit buffer/driver (3-State)
Product specification
IC24 Data Handbook
1998 Jul 27
Philips
Semiconductors
Philips Semiconductors
Product specification
18-bit buffer/driver (3-State)
74ALVCH16825
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
PIN CONFIGURATION
1OE1
1Y
1
1Y
1
GND
1Y
2
1Y
3
V
CC
1Y
4
1Y
5
1Y
6
GND
1Y
7
1Y
8
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
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
1OE2
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
2OE2
•
All data inputs have bus hold
•
Output drive capability 50Ω transmission lines @ 85°C
DESCRIPTION
The 74ALVCH16825 is an 18–bit 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.
GND
GND
2Y
0
2Y
1
GND
2Y
2
2Y
3
2Y
4
V
CC
2Y
5
2Y
6
GND
2Y
7
2Y
8
2OE1
SH00139
QUICK REFERENCE DATA
GND = 0V; T
amb
= 25°C; t
r
= t
f
≤
2.5ns
PARAMETER
SYMBOL
Propagation delay
t
PHL
/t
PLH
CP to Qn
C
I
Input capacitance
C
PD
Power dissipation capacitance per latch
dissi ation ca acitance er
CONDITIONS
V
CC
= 2.5V, C
L
= 30pF
V
CC
= 3.3V, C
L
= 50pF
V
I
= GND to V
CC1
Output enabled
Output disabled
TYPICAL
2.0
2.0
4.0
19
3
UNIT
ns
pF
pF
F
NOTES:
1. C
PD
is used to determine the dynamic power dissipation (P
D
in
µW):
P
D
= C
PD
×
V
CC2
×
f
i
+
S
(C
L
×
V
CC2
×
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
CC2
×
f
o
) = sum of outputs.
ORDERING INFORMATION
PACKAGES
56-Pin Plastic Thin Shrink Small Outline (TSSOP) Type II
TEMPERATURE
RANGE
–40°C to +85°C
OUTSIDE NORTH
AMERICA
74ALVCH16825 DGG
NORTH AMERICA
ACH16825 DGG
DRAWING
NUMBER
SOT364-1
1998 Jul 27
2
853-2097 19785
Philips Semiconductors
Product specification
18-bit buffer/driver (3-State)
74ALVCH16825
PIN DESCRIPTION
PIN NUMBER
1
56
55, 54, 52, 51, 49,
48, 47, 45, 44
2, 3, 5, 6, 8,
9, 10, 12, 13
4, 11, 14, 15, 18, 25,
32, 39, 42, 43, 46, 53
7, 22, 35, 50
28
29
43, 42, 41, 40, 38,
37, 36, 34, 33, 31
16, 17, 19, 20, 21,
23, 24, 26, 27
SYMBOL
1OE1
1OE2
1A0 to 1A8
1Y0 to 1Y8
GND
V
CC
2OE1
2OE2
2A0 to 2A8
2Y0 to 2Y8
NAME AND FUNCTION
Output enable input
(active LOW)
Data inputs
Data outputs
Ground (0V)
Positive supply voltage
Output enable input
(active LOW)
Data inputs
FUNCTION TABLE
INPUTS
nOE1
L
L
H
X
H
L
X
Z
=
=
=
=
nOE2
L
L
X
H
HIGH voltage level
LOW voltage level
Don’t care
High impedance “off” state
A
L
H
X
X
OUTPUT
Y
L
H
Z
Z
LOGIC SYMBOL (IEEE/IEC)
1OE1
1
&
EN1
&
EN2
Data outputs
1OE2 56
2OE1 28
2OE2 29
LOGIC SYMBOL
1A
0
55
1
56
1A
1
54
1A
2
52
1OE1 1OE2
2
3
5
6
8
9
10
12
13
16
17
19
20
21
23
24
26
27
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
2Y
8
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
2A
8
55
54
52
51
49
48
47
45
44
41
40
38
37
36
34
33
31
30
1A
3
51
1A
4
49
1A
5
48
1A
6
47
1A
7
45
1A
8
44
2A
0
41
2A
1
40
2A
2
38
2A
3
37
2A
4
36
2A
5
34
2A
6
33
2A
7
31
2A
8
30
1, 2
∇
1, 1
∇
2
3
5
6
8
9
10
12
13
16
17
19
20
21
23
24
26
27
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
2Y
8
SH00141
2OE1 2OE2
28
29
SH00142
1998 Jul 27
3
Philips Semiconductors
Product specification
18-bit buffer/driver (3-State)
74ALVCH16825
LOGIC DIAGRAM
nOE1
nOE2
BUS HOLD CIRCUIT
V
CC
nA
n
nY
n
Data Input
To internal circuit
TO 8 OTHER CHANNELS
SH00140
SW00044
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
DC supply voltage 2.5V range (for max. speed
performance @ 30 pF output load)
V
CC
DC supply voltage 3.3V range (for max. speed
performance @ 50 pF output load)
DC Input voltage range
DC output voltage range
Operating free-air temperature range
Input rise and fall times
V
CC
= 2.3 to 3.0V
V
CC
= 3.0 to 3.6V
CONDITIONS
MIN
2.3
3.0
0
0
–40
0
0
MAX
2.7
V
3.6
V
CC
V
CC
+85
20
10
V
V
°C
ns/V
UNIT
V
I
V
O
T
amb
t
r
, t
f
ABSOLUTE MAXIMUM RATINGS
In accordance with the Absolute Maximum Rating System (IEC 134)
Voltages are referenced to GND (ground = 0V)
SYMBOL
V
CC
I
IK
V
I
I
OK
V
O
I
O
I
GND
, I
CC
T
stg
P
TOT
PARAMETER
DC supply voltage
DC input diode current
DC in ut voltage
input
DC output diode current
DC output voltage
DC output source or sink current
DC V
CC
or GND current
Storage temperature range
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
V
I
t0
For control pins
2
For data inputs
2
V
O
uV
CC
or V
O
t
0
Note 2
V
O
= 0 to V
CC
CONDITIONS
RATING
–0.5 to +4.6
–50
–0.5 to +4.6
–0.5 to V
CC
+0.5
"50
–0.5 to V
CC
+0.5
"50
"100
–65 to +150
850
600
V
mA
V
mA
mA
°C
mW
UNIT
V
mA
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.
1998 Jul 27
4
Philips Semiconductors
Product specification
18-bit buffer/driver (3-State)
74ALVCH16825
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
MIN
V
IH
HIGH level Input voltage
V
CC
= 2.3 to 2.7V
V
CC
= 2.7 to 3.6V
LOW level Input voltage
V
CC
= 2.3 to 2.7V
V
CC
= 2.7 to 3.6V
V
CC
= 2 3 to 3 6V; V
I
= V
IH
or V
IL
; I
O
= –100µA
100µA
2.3 3.6V;
V
CC
= 2.3V; V
I
= V
IH
or V
IL
; I
O
= –6mA
V
O
OH
HIGH level output voltage
V
CC
= 2.3V; V
I
= V
IH
or V
IL
; I
O
= –12mA
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= –12mA
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= –12mA
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= –24mA
V
CC
= 2 3 to 3 6V; V
I
= V
IH
or V
IL
; I
O
= 100µA
2.3 3.6V;
V
CC
= 2.3V; V
I
= V
IH
or V
IL
; I
O
= 6mA
V
OL
LOW level output voltage
V
CC
= 2.3V; V
I
= V
IH
or V
IL
; I
O
= 12mA
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= 12mA
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= 24mA
I
I
I
OZ
I
CC
∆I
CC
I
BHL2
I
BHH2
I
BHLO2
I
BHHO2
Input leakage current
g
3-State output OFF-state current
Quiescent supply current
Additional quiescent supply current
Bus hold LOW sustaining current
Bus hold HIGH sustaining current
Bus hold LOW overdrive current
Bus hold HIGH overdrive current
V
CC
= 2 3 to 3 6V;
2.3 3.6V;
V
I
= V
CC
or GND
V
CC
= 2.3 to 3.6V; V
I
= V
IH
or V
IL
;
V
O
= V
CC
or GND
V
CC
= 2.3 to 3.6V; V
I
= V
CC
or GND; I
O
= 0
V
CC
= 2.3V to 3.6V; V
I
= V
CC
– 0.6V; I
O
= 0
V
CC
= 2.3V; V
I
= 0.7V
V
CC
= 3.0V; V
I
= 0.8V
V
CC
= 2.3V; V
I
= 1.7V
V
CC
= 3.0V; V
I
= 2.0V
V
CC
= 3.6V
V
CC
= 3.6V
45
75
–45
–75
500
–500
–175
V
CC
*0.2
02
V
CC*
0.3
V
CC*
0.6
V
CC*
0.5
V
CC*
0.6
V
CC
*1.0
1.7
2.0
TYP
1
1.2
V
1.5
1.2
1.5
V
CC
V
CC*
0.08
V
CC*
0.26
V
CC*
0.14
V
CC*
0.09
V
CC*
0.28
GND
0.07
0.15
0.14
0.27
0.1
0.1
0.2
150
–
150
0.20
0 20
0.40
0.70
0.40
0.55
5
10
40
750
µ
µA
µA
µA
µA
µA
µA
µA
µA
V
V
V
V
0.7
V
0.8
MAX
UNIT
V
IL
NOTES:
1. All typical values are at T
amb
= 25°C.
2. Valid for data inputs of bus hold parts.
1998 Jul 27
5
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