SN54LVC646A-SP Datasheet, PDF (1/10 Pages) Texas Instruments – RAD-TOLERANT CLASS V OCTAL BUS TRANSCEIVER AND REGISTER WITH 3-STATE OUTPUTS

SN54LVC646A-SP
www.ti.com ............................................................................................................................................................................................. SCAS865 – OCTOBER 2008
RAD-TOLERANT CLASS V OCTAL BUS TRANSCEIVER AND REGISTER
WITH 3-STATE OUTPUTS
FEATURES
1
• Operates From 1.65 V to 3.6 V
• Inputs Accept Voltages to 5.5 V
• Max t_pd of 7.4 ns at 3.3 V
• Typical V_OLP (Output Ground Bounce)
<0.8 at V_CC = 3.3 V, T_A = 25°C
• Typical V_OHV (Output V_OH Undershoot)
>2 V at V_CC = 3.3 V, T_A = 25°C
• Supports Mixed-Mode Signal Operation on All
Ports (5-V Input/Output Voltage With
3.3-V V_CC)
• I_off Supports Partial Power-Down-Mode
Operation
• Latch-Up Performance Exceeds 250 mA Per
JESD 17
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
• Rad Tolerant: 50kRad (Si) TID ⁽¹⁾
– TID Dose Rate 0.10 rad/s
• QML-V Qualified, SMD 5962-97626
(1) Radiation tolerance is a typical value based upon initial device
qualification. Radiation Lot Acceptance Testing is available –
contact factory for details.
W PACKAGE
(TOP VIEW)
CLKAB 1
SAB 2
DIR 3
A1 4
A2 5
A3 6
A4 7
A5 8
A6 9
A7 10
A8 11
GND 12
24 V_CC
23 CLKBA
22 SBA
21 OE
20 B1
19 B2
18 B3
17 B4
16 B5
15 B6
14 B7
13 B8
DESCRIPTION/ORDERING INFORMATION
The SN54LVC646A octal bus transceiver and register is designed for 2.7-V to 3.6-V V_CC operation.
This device consists of bus-transceiver circuits, D-type flip-flops, and control circuitry arranged for multiplexed
transmission of data directly from the input bus or from the internal registers. Data on the A or B bus is clocked
into the registers on the low-to-high transition of the appropriate clock (CLKAB or CLKBA) input. Figure 1 shows
the four fundamental bus-management functions that are performed with the SN54LVC646A device.
T_A
–55°C to 125°C
CFP – W
ORDERING INFORMATION
PACKAGE ^{(1) (2)}
ORDERABLE PART NUMBER
Tube of 85
5962-9762601VKA
TOP-SIDE MARKING
5962-9762601VKA
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated