74lvc646a NXP Semiconductors, 74lvc646a Datasheet

no-image

74lvc646a

Manufacturer Part Number
74lvc646a
Description
Octal Bus Transceiver/register 3-state
Manufacturer
NXP Semiconductors
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
74lvc646aD
Quantity:
2 445
1. General description
2. Features
The 74LVC646A is a high-performance, low-power, low-voltage, Si-gate CMOS device
and superior to most advanced CMOS compatible TTL families.
Inputs can be driven from either 3.3 V or 5 V devices. In 3-state operation, outputs can
handle 5 V. This feature allows the use of these devices as translators in a mixed 3.3 V
and 5 V environment.
The 74LVC646A consists of non-inverting bus transceiver circuits with 3-state outputs,
D-type flip-flops and control circuitry arranged for multiplexed transmission of data directly
from the internal registers. Data on the A or B bus will be clocked in the internal registers,
as the appropriate clock (CPAB or CPBA) goes to a HIGH logic level. Output enable (OE)
and direction (DIR) inputs are provided to control the transceiver function. In the
transceiver mode, data present at high-impedance port may be stored in either the A or B
register, or in both. With the select source inputs (SAB and SBA) stored and real-time
(transparent mode) data can be multiplexed. The direction (DIR) input determines which
bus will receive data when OE is active (LOW). In the isolation mode (OE = HIGH), A data
may be stored in the B register and/or B data may be stored in the A register. When an
output function is disabled, the input function is still enabled and may be used to store and
transmit data. Only one of the two buses A or B may be driven at a time.
74LVC646A
Octal bus transceiver/register; 3-state
Rev. 04 — 29 June 2004
5 V tolerant inputs/outputs for interfacing with 5 V logic
Supply voltage range from 1.2 V to 3.6 V
Complies with JEDEC standard JESD8-B/JESD36
CMOS low-power consumption
Direct interface with TTL levels
8-bit octal transceiver with D-type latch
Back-to-back registers for storage
Separate controls for data flow in each direction
Supports partial power-down applications; inputs/outputs are high-impedance when
V
ESD protection:
Specified from 40 C to +85 C and 40 C to +125 C.
CC
HBM EIA/JESD22-A114-B exceeds 2000 V
MM EIA/JESD22-A115-A exceeds 200 V.
= 0 V
Product data sheet

Related parts for 74lvc646a

74lvc646a Summary of contents

Page 1

... V. This feature allows the use of these devices as translators in a mixed 3.3 V and 5 V environment. The 74LVC646A consists of non-inverting bus transceiver circuits with 3-state outputs, D-type flip-flops and control circuitry arranged for multiplexed transmission of data directly from the internal registers. Data on the bus will be clocked in the internal registers, as the appropriate clock (CPAB or CPBA) goes to a HIGH logic level ...

Page 2

... Description SO24 plastic small outline package; 24 leads; body width 7.5 mm SSOP24 plastic shrink small outline package; 24 leads; body width 5.3 mm TSSOP24 plastic thin shrink small outline package; 24 leads; body width 4.4 mm Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state Min = [1] [2] = 3.3 V ...

Page 3

... Octal bus transceiver/register; 3-state DIR 2 SAB 22 SBA 1 CPAB 23 CPBA 001aab042 Rev. 04 — 29 June 2004 74LVC646A © Koninklijke Philips Electronics N.V. 2004. All rights reserved ...

Page 4

... DIR 3 001aab040 Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state 3EN2 3EN1 ...

Page 5

... Philips Semiconductors SBA CPBA SAB CPAB Fig 4. Logic diagram. 9397 750 13249 Product data sheet OE DIR identical channels Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state MUX MUX © Koninklijke Philips Electronics N.V. 2004. All rights reserved. ...

Page 6

... B data input/output 15 B data input/output 16 B data input/output 17 B data input/output 18 B data input/output 19 B data input/output 20 B data input/output 21 output enable input (active LOW) Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state CPBA 22 SBA 646A ...

Page 7

... X H Limiting values Parameter supply voltage input diode current input voltage output diode current output voltage output source or sink current V Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state Data I/O Function SBA [2] X input un store A and B unspecified ...

Page 8

... 100 Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state Min - 65 [ +125 C - derates linearly with 8 mW/K. tot derates linearly with 5.5 mW/K. tot Min Typ 2 ...

Page 9

... GND amb = 3 includes the input leakage current. OZ Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state Min = 0.65 - ...

Page 10

... see Figure see Figure see Figure Rev. 04 — 29 June 2004 74LVC646A Min Typ Max Unit - 1.5 - 7.8 ns [2] 1.0 3.0 6 1.5 - 8.6 ns [2] 1.0 3 ...

Page 11

... Figure see Figure see Figure Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state Min Typ Max Unit - - - 1 [2] 1.0 0 150 - - [2] 150 250 - [ 1.0 [4] [ ...

Page 12

... see Figure 3 3 amb = 3 W where Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state Min = 1 2.7 V 3 3.6 V 3 2.7 V 1 3.6 V 1 2.7 V 1 3.6 V 1 2.7 V 150 = 3 3.6 V 150 [3] - © Koninklijke Philips Electronics N.V. 2004. All rights reserved. ...

Page 13

... Measurement points are given in Table V and V are typical output voltage drop that occur with the output load width, maximum clock pulse frequency and the CPAB, CPBA to output Bn, An propagation delays. Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state PLH PHL V M 001aab044 9 ...

Page 14

... V and V are typical output voltage drop that occur with the output load Measurement points Input Output 0 1.5 V 1.5 V Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state PHL PLH V M 001aab046 PLZ PZL ...

Page 15

... Bn output PZL output V OL Measurement points are given in Table V and V are typical output voltage drop that occur with the output load Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state t PZH PZL PHZ ...

Page 16

... Termination resistance should be equal to output impedance Z T Test data Input Load 2 2 2 1000 L Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state V EXT D.U. mna616 of the pulse generator EXT ...

Page 17

... Values for inputs are given in Table 12. Real-time transfer Input OE DIR Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state inputs Values for inputs are given in Fig 13. Real-time transfer; bus A to bus B. CPAB CPBA SAB © Koninklijke Philips Electronics N.V. 2004. All rights reserved. ...

Page 18

... Values for inputs are given in Table 13. Storage transfer Input OE DIR Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state inputs Values for inputs are given in Fig 15. Storage to bus A or bus B. CPAB CPBA SAB © ...

Page 19

... 0.49 0.32 15.6 7.6 10.65 1.27 0.36 0.23 15.2 7.4 10.00 0.019 0.013 0.61 0.30 0.419 0.05 0.014 0.009 0.60 0.29 0.394 REFERENCES JEDEC JEITA MS-013 Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state detail 1.1 1.1 1.4 0.25 0.25 0.1 0.4 1.0 0.043 0.043 0.055 0.01 0.01 ...

Page 20

... Product data sheet 2.5 scale (1) ( 0.38 0.20 8.4 5.4 0.65 0.25 0.09 8.0 5.2 REFERENCES JEDEC JEITA MO-150 Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state detail 7.9 1.03 0.9 1.25 0.2 0.13 7.6 0.63 0.7 EUROPEAN PROJECTION © ...

Page 21

... Product data sheet 2.5 scale (1) ( 0.30 0.2 7.9 4.5 0.65 0.19 0.1 7.7 4.3 REFERENCES JEDEC JEITA MO-153 Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state detail 6.6 0.75 0.4 1 0.2 0.13 6.2 0.50 0.3 EUROPEAN PROJECTION © ...

Page 22

... Product specification - Product specification - Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state Order number Supersedes 9397 750 13249 74LVC646A_3 9397 750 07235 74LVC646A_2 9397 750 04516 74LVC646A_1 9397 750 03391 - © Koninklijke Philips Electronics N.V. 2004. All rights reserved ...

Page 23

... Rev. 04 — 29 June 2004 74LVC646A Octal bus transceiver/register; 3-state © Koninklijke Philips Electronics N.V. 2004. All rights reserved ...

Page 24

... Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 18 Disclaimers Contact information . . . . . . . . . . . . . . . . . . . . 23 74LVC646A Octal bus transceiver/register; 3-state © Koninklijke Philips Electronics N.V. 2004 All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice ...

Related keywords