PDF《SN54ABT543A, SN74ABT543A》

10 A8 B2

21 B3

20 B5

18 B4

19 B6

17 B8

15 B7

16 LEAB

3 G2

11 CEAB 2EN4

13 OEAB 1C5

1 LEBA G1

23 CEBA 1EN3

2 OEBA 6D § This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the DB, DW, JT, NT, PW, and W packages.

1 1 SN54ABT543A, SN74ABT543A OCTAL REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS157F C JANUARY

1991 C REVISED MAY

1997 3 POST OFFICE BOX

655303 ? DALLAS, TEXAS

75265 logic diagram (positive logic) OEBA CEBA LEBA OEAB CEAB LEAB A1 B1 To Seven Other Channels

2 23

1 13

11 14

3 22 C1 1D C1 1D Pin numbers shown are for the DB, DW, JT, NT, PW, and W packages. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)? Supply voltage range, VCC C0.5 V to

7 V Input voltage range, VI (except I/O ports) (see Note 1) C0.5 V to

7 V Voltage range applied to any output in the high or power-off state, VO C0.5 V to 5.5 V Current into any output in the low state, IO: SN54ABT543A

96 mA SN74ABT543A

128 mA Input clamp current, IIK (VI <

0) C18 mA Output clamp current, IOK (VO <

0) C50 mA Package thermal impedance, θJA (see Note 2): DB package 104°C/W DW package 81°C/W NT package 67°C/W PW package 120°C/W Storage temperature range, Tstg C65°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 negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. The package thermal impedance is calculated in accordance with EIA/JEDEC Std JESD51, except for through-hole packages, which use a trace length of zero. SN54ABT543A, SN74ABT543A OCTAL REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS157F C JANUARY

1991 C REVISED MAY

1997 4 POST OFFICE BOX

655303 ? DALLAS, TEXAS

75265 recommended operating conditions (see Note 3) SN54ABT543A SN74ABT543A UNIT MIN MAX MIN MAX UNIT VCC Supply voltage 4.5 5.5 4.5 5.5 V VIH High-level input voltage

2 2 V VIL Low-level input voltage 0.8 0.8 V VI Input voltage

0 VCC

0 VCC V IOH High-level output current C24 C32 mA IOL Low-level output current

48 64 mA ?t/?v Input transition rise or fall rate Outputs enabled

5 5 ns/V TA Operating free-air temperature C55

125 C40

85 °C NOTE 3: Unused pins (input or I/O) must be held high or low to prevent them from floating. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS TA = 25°C SN54ABT543A SN74ABT543A UNIT PARAMETER TEST CONDITIONS MIN TYP? MAX MIN MAX MIN MAX UNIT VIK VCC = 4.5 V, II = C18 mA C1.2 C1.2 C1.2 V VCC = 4.5 V, IOH = C3 mA 2.5 2.5 2.5 VOH VCC =

5 V, IOH = C3 mA

3 3

3 V VOH VCC =

4 5 V IOH = C24 mA

2 2 V VCC = 4.5 V IOH = C32 mA 2*

2 VOL VCC =

4 5 V IOL =

48 mA 0.55 0.55 V VOL VCC = 4.5 V IOL =

64 mA 0.55* 0.55 V Vhys

100 mV II Control inputs VCC =

5 5 V VI = VCC or GND ±1 ±1 ±1 ?A II A or B ports VCC = 5.5 V, VI = VCC or GND ±100 ±100 ±100 ?A IOZH? VCC = 5.5 V, VO = 2.7 V 10§ 10§ 10§ ?A IOZL? VCC = 5.5 V, VO = 0.5 V C10§ C10§ C10§ ?A Ioff VCC = 0, VI or VO ≤ 4.5 V ±100 ±100 ?A ICEX VCC = 5.5 V, VO = 5.5 V Outputs high