transceiver. 74LVT245BDB Datasheet

74LVT245BDB Datasheet PDF

Part 74LVT245BDB
Description octal transceiver
Feature 74LVT245BDB; 74LVT245B 3.3 V octal transceiver with direction pin (3-state) Rev. 02 — 8 May 2008 Product data .
Manufacture nexperia
Datasheet
Download 74LVT245BDB Datasheet




74LVT245BDB
74LVT245B
3.3 V octal transceiver with direction pin (3-state)
Rev. 02 — 8 May 2008
Product data sheet
1. General description
The 74LVT245B is a high-performance BiCMOS product designed for VCC operation at
3.3 V.
This device is an octal transceiver featuring non-inverting 3-state bus compatible outputs
in both send and receive directions. The control function implementation minimizes
external timing requirements. The device features an output enable (OE) input for easy
cascading and a direction (DIR) input for direction control.
2. Features
I 3-state buffers
I Octal bidirectional bus interface
I Input and output interface capability to systems at 5 V supply
I TTL input and output switching levels
I Output capability: +64 mA/32 mA
I Latch-up protection exceeds 500 mA per JEDEC Std 17
I ESD protection:
N HBM JESD22-A114E exceeds 2000 V
N MM JESD22-A115-A exceeds 200 V
I Bus-hold data inputs eliminate the need for external pull-up resistors for unused inputs
I Live insertion/extraction permitted
I Power-up 3-state
I No bus current loading when output is tied to 5 V bus
3. Ordering information
Table 1. Ordering information
Type number Package
Temperature range Name
Description
74LVT245BD 40 °C to +85 °C SO20
plastic small outline package; 20 leads;
body width 7.5 mm
74LVT245BDB 40 °C to +85 °C
SSOP20
plastic shrink small outline package; 20 leads;
body width 5.3 mm
74LVT245BPW 40 °C to +85 °C
TSSOP20 plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
74LVT245BBQ 40 °C to +85 °C
DHVQFN20 plastic dual in-line compatible thermal enhanced very
thin quad flat package; no leads; 20 terminals;
body 2.5 × 4.5 × 0.85 mm
Version
SOT163-1
SOT339-1
SOT360-1
SOT764-1



74LVT245BDB
Nexperia
4. Functional diagram
DIR
1
2 A0
3 A1
A2
4
A3
5
6 A4
A5
7
A6
8
9 A7
Fig 1. Logic diagram
OE
19
B0 18
B1
17
B2
16
B3 15
B4 14
B5
13
B6
12
B7 11
mna174
74LVT245B
3.3 V octal transceiver with direction pin (3-state)
19
G3
1
3EN1
3EN2
1
2
18
2
3
17
4
16
5
15
6
14
7
13
8
12
9
11
mna175
Fig 2. IEC logic symbol
74LVT245B_2
Product data sheet
Rev. 02 — 8 May 2008
© Nexperia B.V. 2017. All rights reserved
2 of 15



74LVT245BDB
Nexperia
74LVT245B
3.3 V octal transceiver with direction pin (3-state)
5. Pinning information
5.1 Pinning
DIR 1
A0 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
GND 10
74LVT245B
20 VCC
19 OE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
11 B7
001aah723
Fig 3. Pin configuration for SO20 and (T)SSOP20
terminal 1
index area
74LVT245B
A0 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
GND(1)
19 OE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
001aah724
Transparent top view
(1) The die substrate is attached to this pad using
conductive die attach material. It can not be used as a
supply pin or input.
Fig 4. Pin configuration for DHVQFN20
5.2 Pin description
Table 2.
Symbol
DIR
A0 to A7
GND
B0 to B7
OE
VCC
Pin description
Pin
1
2, 3, 4, 5, 6, 7, 8, 9
10
18, 17, 16, 15, 14, 13, 12, 11
19
20
Description
direction control
data input/output
ground (0 V)
data input/output
output enable input (active LOW)
supply voltage
74LVT245B_2
Product data sheet
Rev. 02 — 8 May 2008
© Nexperia B.V. 2017. All rights reserved
3 of 15







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