Philips
Semiconductors
74ALVC16245/74ALVCH16245
2.5V/3.3V 16-bit bus transceiver with
direction pin (3-State)
Product specification
Supersedes data of 1998 Jun 16
IC24 Data Handbook
1998 Jun 29
INTEGRATED CIRCUITS
Philips Semiconductors
Product specification
74ALVC16245/
74ALVCH16245
16-bit bus transceiver with direction pin (3-State)
2
1998 Jun 29
853-2083 19638
FEATURES
Wide supply voltage range of 1.2V to 3.6V
Complies with JEDEC standard no. 8-1A
CMOS low power consumption
MULTIBYTE
TM
flow-through standard pin-out architecture
Low inductance multiple V
CC
and ground pins for minimum noise
and ground bounce
Direct interface with TTL levels
All data inputs have bus hold (74ALVCH16245 only)
Output drive capability 50
transmission lines @ 85
C
Current drive
24 mA at 3.0 V
DESCRIPTION
The 74ALVC16245(74ALVCH16245) is a 16-bit transceiver featuring
non-inverting 3-State bus compatible outputs in both send and
receive directions.
The 74ALVC16245(74ALVCH16245) features two output enable
(nOE) inputs for easy cascading and two send/receive (nDIR) inputs
for direction control. nOE controls the outputs so that the buses are
effectively isolated. This device can be used as two 8-bit
transceivers or one 16-bit transceiver.
The 74ALVCH16245 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.
The 74ALVC16245 has 5V tolerant inputs.
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
GND
V
CC1
GND
GND
V
CC1
2A5
2A4
V
CC2
2A3
2A2
GND
2A1
2A0
1A7
1A6
GND
1A5
1A4
V
CC2
1A3
1A2
GND
1A1
1A0
1OE
21
22
23
24
25
26
27
28
GND
2DIR
2OE
2A7
2A6
GND
SW00198
1DIR
1B0
1B1
1B2
1B3
1B4
1B5
1B6
1B7
2B0
2B1
2B2
2B3
2B4
2B5
2B6
2B7
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
An to Bn;
Bn to An
V
CC
= 2.5V, CL = 30pF
V
CC
= 3.3V, CL = 50pF
1.9
ns
C
I
Input capacitance
4.0
pF
C
I/O
Input/output capacitance
8.0
pF
C
Power dissipation capacitance per buffer
V = GND to V
CC
1
Outputs enabled
29
pF
C
PD
Power dissipation capacitance per buffer
V
I
= GND to V
CC
1
Outputs disabled
5
pF
NOTE:
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 the outputs.
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
DWG NUMBER
48-Pin Plastic SSOP Type III
40
C to +85
C
74ALVC16245 DL
AC16245 DL
SOT370-1
48-Pin Plastic TSSOP Type II
40
C to +85
C
74ALVC16245 DGG
AC16245 DGG
SOT362-1
48-Pin Plastic SSOP Type III
40
C to +85
C
74ALVCH16245 DL
ACH16245 DL
SOT370-1
48-Pin Plastic TSSOP Type II
40
C to +85
C
74ALVCH16245 DGG
ACH16245 DGG
SOT362-1
Philips Semiconductors
Product specification
74ALVC16245/
74ALVCH16245
16-bit bus transceiver with direction pin (3-State)
1998 Jun 29
3
PIN DESCRIPTION
PIN NUMBER
SYMBOL
NAME AND FUNCTION
1
1DIR
Direction control
2, 3, 5, 6, 8, 9,
11, 12
1B0 to 1B7
Data inputs/outputs
4, 10, 15, 21,
28, 34, 39, 45
GND
Ground (0V)
7, 18, 31, 42
V
CC
Positive supply voltage
13, 14, 16, 17,
19, 20, 22, 23
2B0 to 2B7
Data inputs/outputs
24
2DIR
Direction control
25
2OE
Output enable input
(active LOW)
36, 35, 33, 32,
30, 29, 27, 26
2A0 to 2A7
Data inputs/outputs
47, 46, 44, 43,
41, 40, 38, 37
1A0 to 1A7
Data inputs/outputs
48
1OE
Output enable input
(active LOW)
LOGIC SYMBOL
2DIR
24
36
35
33
32
30
29
27
26
23
22
20
19
17
16
14
13
2OE
2A0
2A1
2A2
2A3
2A4
2A5
2A6
2A7
2B0
2B1
2B2
2B3
2B4
2B5
2B6
2B7
25
1DIR
1
47
46
44
43
41
40
38
37
12
11
9
8
6
5
3
2
1OE
1A0
1A1
1A2
1A3
1A4
1A5
1A6
1A7
1B0
1B1
1B2
1B3
1B4
1B5
1B6
1B7
48
SW00197
FUNCTION TABLE
INPUTS
INPUTS/OUTPUT
nOE
nDIR
nAn
nBn
L
L
A = B
inputs
L
H
inputs
B = A
H
X
Z
Z
H = HIGH voltage level
L = LOW voltage level
X = don't care
Z = high impedance OFF-state
LOGIC SYMBOL (IEEE/IEC)
48
3 EN1 [BA]
1
G3
G6
6 EN4 [BA]
1
25
24
2
1DIR
1OE
2OE
2DIR
1B0
3 EN2 [AB]
6 EN5 [AB]
47
1A0
46
44
43
41
40
38
37
13
2B0
36
35
33
32
30
29
27
26
3
5
6
8
9
11
12
14
16
17
19
20
22
23
1A1
1A2
1A3
1A4
1A5
1A6
1A7
2A0
2A1
2A2
2A3
2A4
2A5
2A6
2A7
1B1
1B2
1B3
1B4
1B5
1B6
1B7
2B1
2B2
2B3
2B4
2B5
2B6
2B7
SW00196
2
4
5
BUS HOLD CIRCUIT
To internal circuit
V
CC
Data Input
SW00044
Philips Semiconductors
Product specification
74ALVC16245/
74ALVCH16245
16-bit bus transceiver with direction pin (3-State)
1998 Jun 29
4
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
CONDITIONS
LIMITS
UNIT
SYMBOL
PARAMETER
CONDITIONS
MIN
MAX
UNIT
DC supply voltage 2.5V range (for max. speed
performance @ 30 pF output load)
2.3
2.7
V
CC
DC supply voltage 3.3V range (for max. speed
performance @ 50 pF output load)
3.0
3.6
V
DC supply voltage (for low-voltage applications)
1.2
3.6
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
For data inputs with bus hold
1
0.5 to V
CC
+0.5
V
I
DC input voltage
For data inputs without bus hold
1
0.5 to +4.6
V
For control pins
1
0.5 to +4.6
I
OK
DC output diode current
V
O
u
V
CC
or V
O
t
0
"
50
mA
V
O
DC output voltage
Note 1
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. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
Philips Semiconductors
Product specification
74ALVC16245/
74ALVCH16245
16-bit bus transceiver with direction pin (3-State)
1998 Jun 29
5
DC 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
IH
HIGH level Input voltage
V
CC
= 2.3 to 2.7V
1.7
1.2
V
V
IH
HIGH level In ut voltage
V
CC
= 2.7 to 3.6V
2.0
1.5
V
V
IL
LOW level Input voltage
V
CC
= 2.3 to 2.7V
1.2
0.7
V
V
IL
LOW level In ut voltage
V
CC
= 2.7 to 3.6V
1.5
0.8
V
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
= 2.3 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
OH
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 out ut 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
CC
= 2 3 to 3 6V; V
I
= V
IH
or V
IL
; I
O
= 100
A
GND
0 20
V
CC
= 2.3 to 3.6V; V
I
= V
IH
or V
IL
; I
O
= 100
A
GND
0.20
V
CC
= 2.3V; V
I
= V
IH
or V
IL
; I
O
= 6mA
0.07
0.40
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
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= 12mA
0.14
0.40
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= 24mA
0.27
0.55
I
I
Input leakage current
V
CC
= 2.3 to 3.6V;
V
I
= V
CC
or GND
0.1
5
A
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
given per data I/O pin with bus
hold
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.
AC CHARACTERISTICS FOR V
CC
= 2.3V TO 2.7V RANGE
GND = 0V; t
r
= t
f
2.0ns; C
L
= 30pF
LIMITS
SYMBOL
PARAMETER
WAVEFORM
V
CC
= 2.3 to 2.7V
UNIT
MIN
TYP
1
MAX
t
PHL
/t
PLH
Propagation delay
nAn to nBn; nBn to nAn
1, 3
1.0
2.0
3.7
ns
t
PZH
/t
PZL
3-State output enable time
nOE to nAn; nOE to nBn
2, 3
1.0
2.7
5.7
ns
t
PHZ
/t
PLZ
3-State output disable time
nOE to nAn; nOE to nBn
2, 3
1.0
2.2
5.2
ns
NOTES:
1. All typical values are measured at T
amb
= 25
C and V
CC
= 2.5V.
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