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Details, datasheet, quote on part number:SN54BCT125AW
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Datasheet text preview:
SN54BCT125A, SN74BCT125A QUADRUPLE BUS BUFFER GATES WITH 3-STATE OUTPUTS
SCBS032E SEPTEMBER 1988 REVISED APRIL 1994
· · ·
State-of-the-Art BiCMOS Design Significantly Reduces ICCZ 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK) and Flatpacks (W), and Standard Plastic and Ceramic 300-mil DIPs (J, N)
SN54BCT125A . . . J OR W PACKAGE SN74BCT125A . . . D OR N PACKAGE (TOP VIEW)
description
The BCT125A bus buffer features independent line drivers with 3-state outputs. Each output is disabled when the associated output-enable (OE) input is high. The SN54BCT125A is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74BCT125A is characterized for operation from 0°C to 70°C.
FUNCTION TABLE (each buffer) INPUTS OE L L H A H L X OUTPUT Y H L Z
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
SN54BCT125A . . . FK PACKAGE (TOP VIEW)
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
logic symbol
1OE 1A 2OE 2A 3OE 3A 4OE 4A 1 2 4 5 10 9 13 12 8 3Y EN 1 3 6 1Y 2Y
logic diagram (positive logic)
1OE 1A 1 2 3
2Y GND NC 3Y 3A
1Y
2OE 2A 4Y 3OE
4 5 6
11
2Y
10 9 8
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
3A
3Y
4OE 4A Pin numbers shown are for the J, N, and W packages.
13 12 11
4Y
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.
Copyright © 1994, Texas Instruments Incorporated
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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SN54BCT125A, SN74BCT125A QUADRUPLE BUS BUFFER GATES WITH 3-STATE OUTPUTS
SCBS032E SEPTEMBER 1988 REVISED APRIL 1994
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 Current into any output in the low state: SN54BCT125A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA SN74BCT125A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Operating free-air temperature range: SN54BCT125A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 125°C SN74BCT125A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. NOTE 1: The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
recommended operating conditions
SN54BCT125A MIN VCC VIH VIL IIK IOH IOL TA Supply voltage High-level input voltage Low-level input voltage Input clamp current High-level output current Low-level output current Operating free-air temperature 55 4.5 2 0.8 18 12 48 125 0 NOM 5 MAX 5.5 SN74BCT125A MIN 4.5 2 0.8 18 15 64 70 NOM 5 MAX 5.5 UNIT V V V mA mA mA °C
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54BCT125A, SN74BCT125A QUADRUPLE BUS BUFFER GATES WITH 3-STATE OUTPUTS
SCBS032E SEPTEMBER 1988 REVISED APRIL 1994
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.
switching characteristics (see Note 2)
VCC = 5 V, CL = 50 pF, R1 = 500 , R2 = 500 , TA = 25°C BCT125A MIN tPLH tPHL tPZH tPZL tPHZ tPLZ A Y Y Y 1.6 2.7 3.4 5 3 2.8 TYP 3.5 5 6.7 8.2 5.8 5.5 MAX 5.2 6.9 9 10.4 7.4 7.3 MIN 1.6 2.7 3.4 5 3 2.8 VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 , R2 = 500 , TA = MIN to MAX§ SN54BCT125A MAX 6 8 11.1 12.8 9.4 9.9 SN74BCT125A MIN 1.6 2.7 3.4 5 3 2.8 MAX 5.7 7.7 10.3 11.7 8.9 8.6 ns ns ns
PARAMETER
FROM (INPUT)
TO (OUTPUT)
UNIT
OE OE
§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. NOTE 2: Load circuits and voltage waveforms are shown in Section 1.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
25
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