Texas Instruments 74AHCT1G125DBV, 74AHCT1G125DCK, 74AHCT1G125DRL, SN74AHCT1G125DBV, SN74AHCT1G125DCK Schematic [ru]

SN74AHCT1G125

SINGLE BUS BUFFER GATE

WITH 3 STATE OUTPUT

SCLS378L − AUGUST 1997 − REVISED JUNE 2005

D Operating Range of 4.5 V to 5.5 V

D Inputs Are TTL-Voltage Compatible

D Max tpd of 6 ns at 5 V

D Latch-Up Performance Exceeds 250 mA Per

D Low Power Consumption, 10- A Max ICC

JESD 17

D ±8-mA Output Drive at 5 V

DBV PACKAGE

(TOP VIEW)

DCK PACKAGE

DRL PACKAGE

VCC

(TOP VIEW)

(TOP VIEW)

OE

1

5

OE

1

5

VCC

OE

1

5

VCC

A

2

A

2

A

2

GND

3

4

Y

Y

GND

3

4

Y

GND

3

4

See mechanical drawings for dimensions.

description/ordering information

The SN74AHCT1G125 is a single bus buffer gate/line driver with 3-state output. The output is disabled when the output-enable (OE) input is high. When OE is low, true data is passed from the A input to the Y output.

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

	T	PACKAGE†			ORDERABLE	TOP-SIDE
					PART NUMBER	MARKING‡
	A
		SOT (SOT-23) − DBV		Reel of 3000	SN74AHCT1G125DBVR	B25_
				Reel of 250	SN74AHCT1G125DBVT
°	°			Reel of 3000	SN74AHCT1G125DCKR
−40	C to 85 C	SOT (SC-70) − DCK				BM_
				Reel of 250	SN74AHCT1G125DCKT
		SOT (SOT-553) − DRL		Reel of 4000	SN74AHCT1G125DRLR	BM_

†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package.

‡ The actual top-side marking has one additional character that designates the assembly/test site.

FUNCTION TABLE

	INPUTS		OUTPUT
		A	Y
	OE
	L	H	H
	L	L	L
	H	X	Z

logic diagram (positive logic)

1

OE

2		4
A			Y

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.	Copyright 2005, Texas Instruments Incorporated
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	1

SN74AHCT1G125

SINGLE BUS BUFFER GATE

WITH 3 STATE OUTPUT

SCLS378L − AUGUST 1997 − REVISED JUNE 2005

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
Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	−0.5 V to V CC + 0.5 V
Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . −20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . ±20 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . ±25 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . ±50 mA
Package thermal impedance, θJA (see Note 2): DBV package . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . 206°C/W
DCK package . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . 252°C/W
DRL package . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . 142°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.

recommended operating conditions (see Note 3)

		MIN	MAX	UNIT
VCC	Supply voltage	4.5	5.5	V
VIH	High-level input voltage	2		V
VIL	Low-level input voltage		0.8	V
VI	Input voltage	0	5.5	V
VO	Output voltage	0	VCC	V
IOH	High-level output current		−8	mA
IOL	Low-level output current		8	mA
∆t/∆v	Input transition rise or fall rate		20	ns/V
TA	Operating free-air temperature	−40	85	°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	TEST CONDITIONS		VCC		TA = 25°C		MIN	MAX	UNIT
					MIN	TYP	MAX
	VOH	IOH = −50 mA		4.5 V	4.4	4.5		4.4		V
		IOH = −8 mA			3.94			3.8
	VOL	IOL = 50 mA		4.5 V			0.1		0.1	V
		IOL = 8 mA					0.36		0.44
	II	VI = 5.5 V or GND		0 V to 5.5 V			±0.1		±1	mA
	IOZ	VO = VCC or GND		5.5 V			±0.25		±2.5	mA
	ICC	VI = VCC or GND,	IO = 0	5.5 V			1		10	mA
	∆ICC‡	One input at 3.4 V,	Other input at VCC or GND	5.5 V			1.35		1.5	mA
	Ci	VI = VCC or GND		5 V		4	10		10	pF
	Co	VO = VCC or GND		5 V		10				pF

‡ This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC.

2	POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN74AHCT1G125

SINGLE BUS BUFFER GATE

WITH 3 STATE OUTPUT

SCLS378L − AUGUST 1997 − REVISED JUNE 2005

switching characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)

	PARAMETER	FROM			TO	LOAD	TA = 25°C		MIN	MAX	UNIT
		(INPUT)			(OUTPUT)	CAPACITANCE	MIN TYP	MAX
	tPLH		A		Y	CL = 15 pF	3.8	5.5	1	6.5	ns
	tPHL						3.8	5.5	1	6.5
	tPZH				Y	CL = 15 pF	3.6	5.1	1	6	ns
		OE
	tPZL						3.6	5.1	1	6
	tPHZ				Y	CL = 15 pF	4.6	6.8	1	8	ns
		OE
	tPLZ						4.6	6.8	1	8
	tPLH		A		Y	CL = 50 pF	5.3	7.5	1	8.5	ns
	tPHL						5.3	7.5	1	8.5
	tPZH				Y	CL = 50 pF	5.1	7.1	1	8	ns
		OE
	tPZL						5.1	7.1	1	8
	tPHZ				Y	CL = 50 pF	6.1	8.8	1	10	ns
		OE
	tPLZ						6.1	8.8	1	10

operating characteristics, VCC = 5 V, TA = 25°C

	PARAMETER	TEST CONDITIONS	TYP	UNIT
Cpd	Power dissipation capacitance	No load, f = 1 MHz	14	pF

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

3

SN74AHCT1G125

SINGLE BUS BUFFER GATE

WITH 3 STATE OUTPUT

SCLS378L − AUGUST 1997 − REVISED JUNE 2005

PARAMETER MEASUREMENT INFORMATION

						S1	VCC
	From Output	Test	From Output		RL = 1 kΩ		Open	TEST		S1
							GND
	Under Test	Point	Under Test					tPLH/tPHL		Open
	CL			CL				tPLZ/tPZL		VCC
	(see Note A)			(see Note A)				tPHZ/tPZH		GND
								Open Drain		VCC
	LOAD CIRCUIT FOR			LOAD CIRCUIT FOR
	TOTEM-POLE OUTPUTS			3-STATE AND OPEN-DRAIN OUTPUTS
										3 V
					Timing Input			1.5 V
		tw								0 V
									th
				3 V			tsu
										3 V
	Input	1.5 V		1.5 V
					Data Input		1.5 V		1.5 V
				0 V
										0 V
	VOLTAGE WAVEFORMS						VOLTAGE WAVEFORMS
		PULSE DURATION					SETUP AND HOLD TIMES
				3 V		Output				3 V
	Input	1.5 V	1.5 V				1.5 V		1.5 V
						Control
				0 V						0 V
	tPLH			tPHL		Output	tPZL			tPLZ
				VOH						≈VCC
	In-Phase		50% VCC		Waveform 1		50% VCC
				50% VCC	S1 at VCC				VOL + 0.3 V
	Output
				VOL
					(see Note B)					VOL
	tPHL			tPLH		Output	tPZH			tPHZ
				VOH						VOH
	Out-of-Phase				Waveform 2
			50% VCC	50% VCC	S1 at GND		50% VCC		VOH − 0.3 V
	Output									≈0 V
				VOL	(see Note B)
	VOLTAGE WAVEFORMS						VOLTAGE WAVEFORMS
	PROPAGATION DELAY TIMES						ENABLE AND DISABLE TIMES
	INVERTING AND NONINVERTING OUTPUTS						LOWAND HIGH-LEVEL ENABLING

NOTES: A. CL includes probe and jig capacitance.

B.Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.

C.All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr ≤ 3 ns, tf ≤ 3 ns.

D.The outputs are measured one at a time, with one input transition per measurement.

E.All parameters and waveforms are not applicable to all devices.

Figure 1. Load Circuit and Voltage Waveforms

4	POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PACKAGE OPTION ADDENDUM

www.ti.com

11-Apr-2013

PACKAGING INFORMATION

Orderable Device	Status	Package Type	Package	Pins	Package	Eco Plan	Lead/Ball Finish	MSL Peak Temp	Op Temp (°C)	Top-Side Markings	Samples
	(1)		Drawing		Qty	(2)		(3)		(4)
74AHCT1G125DBVRE4	ACTIVE	SOT-23	DBV	5	3000	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(B253 ~ B25G ~
						& no Sb/Br)				B25J ~ B25L ~
										B25S)
74AHCT1G125DBVRG4	ACTIVE	SOT-23	DBV	5	3000	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(B253 ~ B25G ~
						& no Sb/Br)				B25J ~ B25L ~
										B25S)
74AHCT1G125DBVTE4	ACTIVE	SOT-23	DBV	5	250	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(B253 ~ B25G ~
						& no Sb/Br)				B25L ~ B25S)
74AHCT1G125DBVTG4	ACTIVE	SOT-23	DBV	5	250	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(B253 ~ B25G ~
						& no Sb/Br)				B25L ~ B25S)
74AHCT1G125DCKRE4	ACTIVE	SC70	DCK	5	3000	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(BM3 ~ BMG ~ BMJ ~
						& no Sb/Br)				BML ~ BMS)
74AHCT1G125DCKRG4	ACTIVE	SC70	DCK	5	3000	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(BM3 ~ BMG ~ BMJ ~
						& no Sb/Br)				BML ~ BMS)
74AHCT1G125DCKTE4	ACTIVE	SC70	DCK	5	250	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(BM3 ~ BMG ~ BML ~
						& no Sb/Br)				BMS)
74AHCT1G125DCKTG4	ACTIVE	SC70	DCK	5	250	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(BM3 ~ BMG ~ BML ~
						& no Sb/Br)				BMS)
74AHCT1G125DRLRG4	ACTIVE	SOT	DRL	5	4000	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(BMB ~ BMS)
						& no Sb/Br)
SN74AHCT1G125DBVR	ACTIVE	SOT-23	DBV	5	3000	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(B253 ~ B25G ~
						& no Sb/Br)				B25J ~ B25L ~
										B25S)
SN74AHCT1G125DBVT	ACTIVE	SOT-23	DBV	5	250	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(B253 ~ B25G ~
						& no Sb/Br)				B25L ~ B25S)
SN74AHCT1G125DCKR	ACTIVE	SC70	DCK	5	3000	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(BM3 ~ BMG ~ BMJ ~
						& no Sb/Br)				BML ~ BMS)
SN74AHCT1G125DCKT	ACTIVE	SC70	DCK	5	250	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(BM3 ~ BMG ~ BML ~
						& no Sb/Br)				BMS)
SN74AHCT1G125DRLR	ACTIVE	SOT	DRL	5	4000	Green (RoHS	CU NIPDAU	Level-1-260C-UNLIM	-40 to 85	(BMB ~ BMS)
						& no Sb/Br)

(1) The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

Addendum-Page 1