74LVC16245A; 74LVCH16245A
Rev. 14 — 24 September 2021
16-bit bus transceiver with direction pin; 5 V tolerant; 3-state
Product data sheet
1. General description
The 74LVC16245A; 74LVCH16245A is a 16-bit transceiver with 3-state outputs. The device can be
used as two 8-bit transceivers or one 16-bit transceiver. The device features two output enables
(1OE and 2OE) each controlling eight outputs, and two send/receive (1DIR and 2DIR) inputs for
direction control. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state.
Inputs can be driven from either 3.3 V or 5 V devices. This feature allows the use of these devices
as translators in mixed 3.3 V and 5 V environments.
Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times.
This device is fully specified for partial power down applications using I
OFF
. The I
OFF
circuitry
disables the output, preventing the potentially damaging backflow current through the device when
it is powered down.
The 74LVCH16245A bus hold on data inputs eliminates the need for external pull-up resistors to
hold unused inputs.
2. Features and benefits
•
•
•
•
•
•
•
•
•
Overvoltage tolerant inputs to 5.5 V
Wide supply voltage range from 1.2 V to 3.6 V
CMOS low power dissipation
MULTIBYTE flow-through standard pin-out architecture
Low inductance multiple power and ground pins for minimum noise and ground bounce
Direct interface with TTL levels
I
OFF
circuitry provides partial Power-down mode operation
All data inputs have bus hold (74LVCH16245A only)
Complies with JEDEC standard:
•
JESD8-7A (1.65 V to 1.95 V)
•
JESD8-5A (2.3 V to 2.7 V)
•
JESD8-C/JESD36 (2.7 V to 3.6 V)
ESD protection:
•
HBM JESD22-A114F exceeds 2000 V
•
MM JESD22-A115-B exceeds 200 V
•
CDM ANSI/ESDA/Jedec JS-002 exceeds 1000 V
Specified from -40 °C to +85 °C and -40 °C to +125 °C
•
•
Nexperia
74LVC16245A; 74LVCH16245A
16-bit bus transceiver with direction pin; 5 V tolerant; 3-state
3. Ordering information
Table 1. Ordering information
Type number
Temperature range
74LVC16245ADGG
74LVCH16245ADGG
74LVC16245ADGV
74LVCH16245ADGV
-40 °C to +125 °C
TVSOP48
-40 °C to +125 °C
Package
Name
TSSOP48
Description
Version
plastic thin shrink small outline package; SOT362-1
48 leads; body width 6.1 mm
plastic thin shrink small outline
package; 48 leads; body width 4.4 mm;
lead pitch 0.4 mm
SOT480-1
4. Functional diagram
1DIR
1OE
1A0
1B0
1A1
1B1
1A2
1B2
1A3
1B3
1A4
1B4
1A5
1B5
1A6
1B6
1A7
1B7
2A7
2B7
001aaa789
2DIR
2OE
2A0
2B0
2A1
2B1
2A2
2B2
2A3
2B3
2A4
2B4
2A5
2B5
2A6
2B6
Fig. 1.
Logic symbol
74LVC_LVCH16245A
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 14 — 24 September 2021
2 / 15
Nexperia
74LVC16245A; 74LVCH16245A
16-bit bus transceiver with direction pin; 5 V tolerant; 3-state
1OE
1DIR
2OE
2DIR
G3
3EN1[BA]
3EN2[AB]
G6
6EN4[BA]
6EN5[AB]
1A0
1
2
1B0
1A1
1A2
1A3
1A4
1A5
1A6
1A7
2A0
4
5
2A1
2A2
2A3
2A4
2A5
2A6
2A7
1B1
1B2
1B3
1B4
1B5
1B6
1B7
2B0
2B1
2B2
2B3
2B4
2B5
2B6
2B7
001aaa790
Fig. 2.
IEC logic symbol
V
CC
data input
to internal circuit
mna705
Fig. 3.
Bus hold circuit
74LVC_LVCH16245A
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 14 — 24 September 2021
3 / 15
Nexperia
74LVC16245A; 74LVCH16245A
16-bit bus transceiver with direction pin; 5 V tolerant; 3-state
5. Pinning information
5.1. Pinning
74LVC16245A
74LVCH16245A
1DIR
1B0
1B1
GND
1B2
1B3
V
CC
1B4
1B5
1
2
3
4
5
6
7
8
9
48 1OE
47 1A0
46 1A1
45 GND
44 1A2
43 1A3
42 V
CC
41 1A4
40 1A5
39 GND
38 1A6
37 1A7
36 2A0
35 2A1
34 GND
33 2A2
32 2A3
31 V
CC
30 2A4
29 2A5
28 GND
27 2A6
26 2A7
25 2OE
001aad110
GND 10
1B6 11
1B7 12
2B0 13
2B1 14
GND 15
2B2 16
2B3 17
V
CC
18
2B4 19
2B5 20
GND 21
2B6 22
2B7 23
2DIR 24
Fig. 4.
Pin configuration SOT362-1 (TSSOP48) and SOT480-1 (TVSOP48)
5.2. Pin description
Table 2. Pin description
Symbol
1DIR, 2DIR
1B0 to 1B7
2B0 to 2B7
GND
V
CC
1OE, 2OE
1A0 to 1A7
2A0 to 2A7
Pin
1, 24
2, 3, 5, 6, 8, 9, 11, 12
13, 14, 16, 17, 19, 20, 22, 23
4, 10, 15, 21, 28, 34, 39, 45
7, 18, 31, 42
48, 25
47, 46, 44, 43, 41, 40, 38, 37
36, 35, 33, 32, 30, 29, 27, 26
Description
direction control input
data input/output
data input/output
ground (0 V)
supply voltage
output enable input (active LOW)
data input/output
data input/output
74LVC_LVCH16245A
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 14 — 24 September 2021
4 / 15
Nexperia
74LVC16245A; 74LVCH16245A
16-bit bus transceiver with direction pin; 5 V tolerant; 3-state
6. Functional description
Table 3. Function table
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
Inputs
nOE
L
L
H
nDIR
L
H
X
Outputs
nAn
nAn = nBn
inputs
Z
nBn
inputs
nBn = nAn
Z
7. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
V
CC
I
IK
V
I
I
OK
V
O
I
O
I
CC
I
GND
T
stg
P
tot
[1]
[2]
[3]
Conditions
V
I
< 0 V
[1]
V
O
> V
CC
or V
O
< 0 V
output HIGH or LOW
output 3-state
V
O
= 0 V to V
CC
[2]
[2]
Min
-0.5
-50
-0.5
-
-0.5
-0.5
-
-
-100
-65
Max
+6.5
-
+6.5
±50
V
CC
+ 0.5
+6.5
±50
100
-
+150
500
Unit
V
mA
V
mA
V
V
mA
mA
mA
°C
mW
supply voltage
input clamping current
input voltage
output clamping current
output voltage
output current
supply current
ground current
storage temperature
total power dissipation
T
amb
= -40 °C to +125 °C
[3]
-
The minimum input voltage ratings may be exceeded if the input current ratings are observed.
The output voltage ratings may be exceeded if the output current ratings are observed.
For SOT362-1 (TSSOP48) packages: P
tot
derates linearly with 12.2 mW/K above 109 °C.
For SOT480-1 (TVSOP48) packages: P
tot
derates linearly with 5.5 mW/K above 60 °C.
8. Recommended operating conditions
Table 5. Recommended operating conditions
Symbol Parameter
Conditions
V
CC
V
I
V
O
T
amb
Δt/ΔV
supply voltage
functional
input voltage
output voltage
ambient temperature
input transition rise and fall rate
output HIGH or LOW
output 3-state
in free air
V
CC
= 1.2 V to 2.7 V
V
CC
= 2.7 V to 3.6 V
Min
1.65
1.2
0
0
0
-40
0
0
Typ
-
-
-
-
-
-
-
-
Max
3.6
3.6
5.5
V
CC
5.5
+125
20
10
Unit
V
V
V
V
V
°C
ns/V
ns/V
74LVC_LVCH16245A
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 14 — 24 September 2021
5 / 15
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