INTEGRATED CIRCUITS
74LVC16244A/74LVCH16244A
16-bit buffer/line driver;
5V input/output tolerant (3-State)
Product specification
Supersedes data of 1997 Jun 30
IC24 Data Handbook
1997 Oct 28
Philips
Semiconductors
Philips Semiconductors
Product specification
16-bit buffer/line driver; 5V input/output tolerant
(3-State)
74LVC16244A/
74LVCH16244A
FEATURES
•
5 volt tolerant inputs/outputs for interfacing with 5V logic
•
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 power and ground pins for minimum
noise and ground bounce
PIN CONFIGURATION
1OE
1Y0
1Y1
GND
1Y2
1Y3
V
CC
2Y0
2Y1
1
2
3
4
5
6
7
8
9
48 2OE
47 1A0
46 1A1
45 GND
44 1A2
43 1A3
42 V
CC
41 2A0
40 2A1
39 GND
38 2A2
37 2A3
36 3A0
35 3A1
34 GND
33 3A2
32 3A3
31 V
CC
30 4A0
29 4A1
28 GND
27 4A2
26 4A3
25 3OE
•
Direct interface with TTL levels
•
All data inputs have bus hold (74LVCH16244A only)
DESCRIPTION
The 74LVC(H)16244A is a high-performance, low-power,
low-voltage, Si-gate CMOS device, superior to most advanced
CMOS compatible TTL families. Inputs can be driven from either
3.3V or 5V devices. In 3-State operation, outputs can handle 5V.
These features allow the use of these devices in a mixed 3.3V/5V
environment.
The 74LVC(H)16244A is a 16-bit non-inverting buffer/line driver with
3-State outputs. The device can be used as four 4-bit buffers, two
8-bit buffers or one 16-bit buffer. The 3-State outputs are controlled
by the output enable inputs 1OE and 2OE. A HIGH on nOE causes
the outputs to assume a high impedance OFF-state. The device can
be used as four 4-bit buffers, two 8-bit buffers or one 16-bit buffer.
The 74LVC(H)16244A is identical to the 74LVC16240A but has
non-inverting outputs.
The 74LVCH16244A bus hold data inputs eliminates the need for
external pull up resistors to hold unused inputs.
GND 10
2Y2 11
2Y3 12
3Y0 13
3Y1 14
GND 15
3Y2 16
3Y3 17
V
CC
18
4Y0 19
4Y1 20
GND 21
4Y2 22
4Y3 23
4OE 24
SW00194
ORDERING INFORMATION
PACKAGES
48-Pin Plastic SSOP Type III
48-Pin Plastic TSSOP Type II
48-Pin Plastic SSOP Type III
48-Pin Plastic TSSOP Type II
TEMPERATURE RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
OUTSIDE NORTH AMERICA
74LVC16244A DL
74LVC16244A DGG
74LVCH16244A DL
74LVCH16244A DGG
NORTH AMERICA
VC16244A DL
VC16244A DGG
VCH16244A DL
VCH16244A DGG
DWG NUMBER
SOT370-1
SOT362-1
SOT370-1
SOT362-1
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25°C; t
r
= t
f
≤
2.5 ns
SYMBOL
t
PHL
/t
PLH
C
I
C
PD
PARAMETER
Propagation delay
1An to 1Yn;
2An to 2Yn
Input capacitance
Power dissipation capacitance per buffer
V
I
= GND to V
CC1
C
L
= 50pF
V
CC
= 3.3V
CONDITIONS
TYPICAL
3.0
5.0
25
UNIT
ns
pF
pF
NOTES:
1. C
PD
is used to determine the dynamic power dissipation (P
D
in
mW):
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 capacity in pF;
f
o
= output frequency in MHz; V
CC
= supply voltage in V;
S
(C
L
×
V
CC2
×
f
o
) = sum of the outputs.
1997 Oct 28
2
853-1994 18612
Philips Semiconductors
Product specification
16-bit buffer/line driver; 5V input/output tolerant
(3-State)
74LVC16244A/
74LVCH16244A
PIN DESCRIPTION
PIN NUMBER
1
2, 3, 5, 6
4, 10, 15, 21,
28, 34, 39, 45
7, 18, 31, 42
8, 9, 11, 12
13, 14, 16, 17
19, 20, 22, 23
24
25
30, 29, 27, 26
36, 35, 33, 32
41, 40, 38, 37
47, 46, 44, 43
48
SYMBOL
1OE
1Y0 to 1Y3
GND
V
CC
2Y0 to 2Y3
3Y0 to 3Y3
4Y0 to 4Y3
4OE
3OE
4A0 to 4A3
3A0 to 3A3
2A0 to 2A3
1A0 to 1A3
2OE
NAME AND FUNCTION
Output enable input
(active LOW)
Data outputs
Ground (0V)
Positive supply voltage
Data outputs
Data outputs
Data outputs
Output enable input
(active LOW)
Output enable input
(active LOW)
Data inputs
Data inputs
Data inputs
Data inputs
Output enable input
(active LOW)
FUNCTION TABLE
INPUTS
nOE
L
L
H
H = HIGH voltage level
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state
nAn
L
H
X
OUTPUT
nYn
L
H
Z
LOGIC SYMBOL (IEEE/IEC)
1OE
2OE
3OE
4OE
1A0
1A1
1A2
1A3
2A0
1
48
25
24
47
46
44
43
41
1
40
38
37
36
35
33
32
30
29
27
26
1
4
∇
1
3
∇
2
∇
1EN
2EN
3EN
4EN
1
1
∇
2
3
5
6
8
9
11
12
13
14
16
17
19
20
22
23
1Y0
1Y1
1Y2
1Y3
2Y0
2Y1
2Y2
2Y3
3Y0
3Y1
3Y2
3Y3
4Y0
4Y1
4Y2
4Y3
LOGIC SYMBOL
1A0
47
2
1Y0
3A0
36
13
3Y0
2A1
2A2
2A3
3A0
1A1
46
3
1Y1
3A1
35
14
3Y1
3A1
3A2
1A2
44
5
1Y2
3A2
33
16
3Y2
3A3
4A0
1A3
43
6
1Y3
3A3
32
17
3Y3
4A1
4A2
1OE
1
3OE
25
4A3
SW00056
2A0
41
8
2Y0
4A0
30
19
4Y0
BUSHOLD CIRCUIT
2A1
40
9
2Y1
4A1
29
20
4Y1
V
CC
2A2
38
11
2Y2
4A2
27
22
4Y2
2A3
37
12
2Y3
4A3
26
23
4Y3
2OE
48
4OE
24
Data Input
To internal circuit
SW00195
SW00044
1997 Oct 28
3
Philips Semiconductors
Product specification
16-bit buffer/line driver; 5V input/output tolerant
(3-State)
74LVC16244A/
74LVCH16244A
ABSOLUTE MAXIMUM RATINGS
1
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
V
O
I
O
I
GND
, I
CC
T
stg
P
tot
PARAMETER
DC supply voltage
DC input diode current
DC input voltage
DC output diode current
DC output voltage; output HIGH or LOW
state
DC output voltage; output 3-State
DC output source or sink current
DC V
CC
or GND current
Storage temperature range
Power dissipation per package
– SO package
– SSOP and TSSOP package
Above +70°C derate linearly 8mW/K
Above +60°C derate linearly 5.5mW/K
V
I
< 0
Note 2
V
O
> V
CC
or V
O
< 0
Note 2
Note 2
V
O
= 0 to V
CC
CONDITIONS
LIMITS
MIN
–0.5
–
–0.5
–
–0.5
–0.5
–
–
–65
MAX
+6.5
–50
+6.5
"50
V
CC
+ 0.5
6.5
"50
"100
+150
500
500
UNIT
V
mA
V
mA
V
V
mA
mA
°C
mW
NOTES:
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 clamp current ratings are observed.
RECOMMENDED OPERATING CONDITIONS
SYMBOL
V
CC
V
CC
V
I
V
O
V
O
T
amb
t
r
, t
f
PARAMETER
DC supply voltage (for max. speed
performance)
DC supply voltage (for low-voltage
applications)
DC Input voltage range
DC output voltage range; output HIGH or
LOW state
DC output voltage range; output 3-State
Operating ambient temperature range in
free air
Input rise and fall times
See DC and AC characteristics
for individual device
V
CC
= 1.2 to 2.7V
V
CC
= 2.7 to 3.6V
CONDITIONS
LIMITS
MIN
MIN.
2.7
1.2
0
0
0
–40
0
0
MAX
MAX.
3.6
3.6
5.5
V
CC
5.5
+85
20
10
UNIT
V
V
V
V
V
°C
ns/V
1997 Oct 28
4
Philips Semiconductors
Product specification
16-bit buffer/line driver; 5V input/output tolerant
(3-State)
74LVC16244A/
74LVCH16244A
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions. Voltages are referenced to GND (ground = 0V)
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Temp = -40°C to +85°C
MIN
V
IH
HIGH level Input voltage
V
CC
= 1.2V
V
CC
= 2.7 to 3.6V
LOW level Input voltage
V
CC
= 1.2V
V
CC
= 2.7 to 3.6V
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= –12mA
V
O
OH
HIGH level output voltage
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= –100µA
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= –18mA
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= –24mA
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= 12mA
V
OL
LOW level output voltage
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= 100µA
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= 24mA
I
I
I
OZ
I
off
I
CC
∆I
CC
I
BHL
I
BHH
I
BHLO
I
BHHO
Input leakage current
3-State output OFF-state current
Power off leakage supply
Quiescent supply current
Additional quiescent supply current
per input pin
Bus hold LOW sustaining current
Bus hold HIGH sustaining current
Bus hold LOW overdrive current
Bus hold HIGH overdrive current
V
CC
= 3 6V; V
I
= 5 5V or GND
6
3.6V;
5.5V
V
CC
= 3.6V; V
I
= V
IH
or V
IL
; V
O
= 5.5V or GND
V
CC
= 0.0V; V
I
or V
O
= 5.5V
V
CC
= 3.6V; V
I
= V
CC
or GND; I
O
= 0
V
CC
= 2.7V to 3.6V; V
I
= V
CC
–0.6V; I
O
= 0
V
CC
= 3.0V; V
I
= 0.8V
2, 3, 4
V
CC
= 3.0V; V
I
= 2.0V
2, 3, 4
V
CC
= 3.6V
2, 3, 5
V
CC
= 3.6V
2, 3, 5
75
–75
500
–500
"0
1
"0.1
0.1
0.1
0.1
5
V
CC
*0.5
V
CC
*0.2
V
CC
*0.6
V
CC
*0.8
0.40
0.20
0.55
"5
"5
"10
20
500
µA
µA
µA
µA
µA
µA
µA
µA
µA
V
V
CC
V
V
CC
2.0
GND
V
0.8
TYP
1
MAX
V
UNIT
V
IL
NOTES:
1. All typical values are at V
CC
= 3.3V and T
amb
= 25°C.
2. Valid for data inputs of bus hold parts (LVCH16-A) only.
3. For data inputs only, control inputs do not have a bus hold circuit.
4. The specified sustaining current at the data input holds the input below the specified V
I
level.
5. The specified overdrive current at the data input forces the data input to the opposite logic input state.
6. For bus hold parts, the bus hold circuit is switched off when V
i
exceeds V
CC
allowing 5.5V on the input terminal.
1997 Oct 28
5
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