|
Details, datasheet, quote on part number:SN54BCT125A
| |
Datasheet text preview:
SN54BCT125A, SN74BCT125A QUADRUPLE BUS BUFFER GATES WITH 3-STATE OUTPUTS
SCBS032F SEPTEMBER 1988 REVISED MARCH 2003
D D
Operating Voltage Range of 4.5 V to 5.5 V State-of-the-Art BiCMOS Design Significantly Reduces ICCZ
SN54BCT125A . . . J OR W PACKAGE SN74BCT125A . . . D, N, OR NS PACKAGE (TOP VIEW)
D
3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
SN54BCT125A . . . FK PACKAGE (TOP VIEW)
1OE 1A 1Y 2OE 2A 2Y GND
1 2 3 4 5 6 7
14 13 12 11 10 9 8
VCC 4OE 4A 4Y 3OE 3A 3Y
1Y NC 2OE NC 2A
4 5 6 7 8
3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
1A 1OE NC VCC 4OE 4A NC 4Y NC 3OE
NC No internal connection ORDERABLE PART NUMBER SN74BCT125AN SN74BCT125AD SN74BCT125ADR SN74BCT125ANSR SNJ54BCT125AJ SNJ54BCT125AW SNJ54BCT125AFK Tube Tube Tape and reel Tape and reel Tube Tube Tube FUNCTION TABLE (each buffer) INPUTS OE L L H A H L X OUTPUT Y H L Z
Copyright 2003, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.
description/ordering information
The 'BCT125A bus buffers feature independent line drivers with 3-state outputs. Each output is disabled when the associated output-enable (OE) input is high. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. ORDERING INFORMATION
TA PDIP N 0°C to 70°C to 70°C SOIC D SOP NS CDIP J 55°C to 125°C CFP W LCCC FK PACKAGE TOP-SIDE MARKING SN74BCT125AN BCT125A BCT125A SNJ54BCT125AJ SNJ54BCT125AW
SNJ54BCT125AFK Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package.
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 Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
2Y GND NC 3Y 3A
1
SN54BCT125A, SN74BCT125A QUADRUPLE BUS BUFFER GATES WITH 3-STATE OUTPUTS
SCBS032F SEPTEMBER 1988 REVISED MARCH 2003
logic diagram (positive logic)
1OE 1A 1 2 3
1Y
2OE 2A
4 5 6
2Y
3OE 3A
10 9 8
3Y
4OE 4A
13 12 11
4Y
Pin numbers shown are for the D, J, N, NS, and W packages.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V Voltage range applied to any output in the disabled or power-off state, VO . . . . . . . . . . . . . . . . 0.5 V to 5.5 V Voltage range applied to any output in the high state, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to VCC Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA Current into any output in the low state, IO: SN54BCT125A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA SN74BCT125A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Package thermal impedance, JA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Stresses beyond those listed under "absolute maximum ratings" 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. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7.
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54BCT125A, SN74BCT125A QUADRUPLE BUS BUFFER GATES WITH 3-STATE OUTPUTS
SCBS032F SEPTEMBER 1988 REVISED MARCH 2003
recommended operating conditions (see Note 3)
SN54BCT125A MIN VCC VIH VIL IIK IOH IOL Supply voltage High-level input voltage Low-level input voltage Input clamp current High-level output current Low-level output current 4.5 2 0.8 18 12 48 NOM 5 MAX 5.5 SN74BCT125A MIN 4.5 2 0.8 18 15 64 NOM 5 MAX 5.5 UNIT V V V mA mA mA
TA Operating free-air temperature 55 125 0 70 °C NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER VIK VOH VCC = 4.5 V, VCC = 4.5 V TEST CONDITIONS CONDITIONS II = 18 mA IOH = 3 mA IOH = 12 mA IOH = 15 mA IOL = 48 mA IOL = 64 mA VI = 7 V VI = 2.7 V VI = 0.5 V VO = 2.7 V VO = 0.5 V VO = 0 Outputs open Outputs open Outputs open VI = 2.5 V or 0.5 V VO = 2.5 V or 0.5 V 100 19 46 6 4 MIN SN54BCT125A TYP MAX 1.2 2.4 2 3.3 3.2 2 0.38 0.55 0.42 0.1 35 20 50 50 225 31 49 14 100 19 46 6 4 9 0.55 0.1 25 20 50 50 225 31 49 14 3.1 V mA µA µA µA µA mA mA mA mA pF pF 2.4 3.3 V MIN SN74BCT125A TYP MAX 1.2 UNIT V
VOL II IIH IIL IOZH IOZL IOS ICCH ICCL ICCZ Ci
VCC = 4 5 V 4.5 VCC = 0, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5 V,
Co VCC = 5 V, 9 All typical values are at VCC = 5 V. Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
3
|
|
