Texas Instruments CY74FCT163500CPACT, CY74FCT163500CPAC, CY74FCT163500APVCT, CY74FCT163500APVC, CY74FCT163500CPVCT Datasheet

Data sheet acquired from Cypress Semiconductor Corporation.

Data sheet modified to remove devices not offered.

CY74FCT163500

SCCS066 - June 1997 - Revised March 2000

18-Bit Registered Transceiver

Features

• Low power, pin-compatible replacement for LCX and LPT families

• 5V tolerant inputs and outputs

• 24 mA balanced drive outputs

• Power-off disable outputs permits live insertion

• Edge-rate control circuitry for reduced noise

• FCT-C speed at 4.6 ns

• Latch-up performance exceeds JEDEC standard no. 17

• ESD > 2000V per MIL-STD-883D, Method 3015

• Typical output skew < 250ps

• Industrial temperature range of –40˚C to +85˚C

• TSSOP (19.6-mil pitch) or SSOP (25-mil pitch)

• Typical V (ground bounce) performance exceeds Mil olp

Std 883D

• VCC = 2.7V to 3.6V

Functional Description

The CY74FCT163500 is an 18-bit universal bus transceiver that can be operated in transparent, latched, or clock modes by combining D-type latches and D-type flip-flops. Data flow in each direction is controlled by output-enable (OEAB and OEBA), latch enable (LEAB and LEBA), and clock inputs (CLKAB and CLKBA) inputs. For A-to-B data flow, the device operates in transparent mode when LEAB is HIGH. When LEAB is LOW, the A data is latched if CLKAB is held at a HIGH or LOW logic level. If LEAB is LOW, the A bus data is stored in the latch/flip-flop on the HIGH-to-LOW transition of CLKAB. OEAB performs the output enable function on the B port. Data flow from B-to-A is similar to that of A-to-B and is controlled by OEBA, LEBA, and CLKBA.

The CY74FCT163500 has 24-mA balanced output drivers with current limiting resistors in the outputs. This reduces the need for external terminating resistors and provides for minimal undershoot and reduced ground bounce.The inputs and outputs are capable of being driven by 5.0V busses, allowing them to be used in mixed voltage systems as translators. The outputs are also designed with a power off disable feature enabling them to be used in applications requiring live insertion.

Logic Block Diagram			Pin Configuration
				SSOP/TSSOP
				Top View
			OEAB	1	56	GND
			LEAB	2	55	CLKAB
			A1	3	54	B1
OEAB			GND	4	53	GND
CLKBA			A2	5	52	B2
			A3	6	51	B3
LEBA			VCC	7	50	VCC
OEBA			A4	8	49	B4
			A5	9	48	B5
CLKAB			A6	10	47	B6
LEAB			GND	11	46	GND
			A7	12	45	B7
	C	C	A8	13	44	B8
			A9	14	43	B9
			B1
A1	D	D	A10	15	42	B
						10
			A11	16	41	B11
			A12	17	40	B12
	C	C	GND	18	39	GND
			A13	19	38	B13
	D	D	A14	20	37	B14
			A15	21	36	B15
			VCC	22	35	VCC
			A16	23	34	B16
	TO 17 OTHER CHANNELS		A17	24	33	B17
			GND	25	32	GND
			A18	26	31	B18
			OEBA	27	30	CLKBA
			LEBA	28	29	GND

Copyright © 2000, Texas Instruments Incorporated

CY74FCT163500

Pin Summary

	Name			Description
	OEAB			A-to-B Output Enable Input
				B-to-A Output Enable Input (Active LOW)
	OEBA
	LEAB			A-to-B Latch Enable Input
	LEBA			B-to-A Latch Enable Input
				A-to-B Clock Input (Active LOW)
	CLKAB
				B-to-A Clock Input (Active LOW)
	CLKBA

AA-to-B Data Inputs or B-to-A Three-State Outputs

BB-to-A Data Inputs or A-to-B Three-State Outputs

Maximum Ratings[5, 6]

(Above which the useful life may be impaired. For user guidelines, not tested.)

Storage Temperature ................................	−55°C to +125°C
Ambient Temperature with	−55°C to +125°C
Power Applied .................................................
Supply Voltage Range .....................................	0.5V to +4.6V
DC Input Voltage .................................................	−0.5V to +7.0V
DC Output Voltage ..............................................	−0.5V to +7.0V
DC Output Current	−60 to +120 mA
(Maximum Sink Current/Pin) ...........................
Power Dissipation ..........................................................	1.0W

Function Table[1, 2]

	Inputs						Outputs
OEAB	LEAB					A	B
			CLKAB
L	X		X			X	Z
H	H		X			L	L
H	H		X			H	H
H	L					L	L
H	L					H	H
H	L		H			X	B[3]
H	L		L			X	B[4]

Notes:

Static Discharge Voltage............................................			>2001V
(per MIL-STD-883, Method 3015)
Operating Range
		Ambient
Range		Temperature	VCC
Industrial		−40°C to +85°C	2.7V to 3.6V

1.H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care. Z = HIGH Impedance. = HIGH-to-LOW Transition.

2.A-to-B data flow is shown, B-to-A data flow is similar but uses OEBA, LEBA, and CLKBA.

3.Output level before the indicated steady-state input conditions were established.

4.Output level before the indicated steady-state input conditions were established, provided that CLKAB was LOW before LEAB went LOW.

5.Operation beyond the limits set forth may impair the useful life of the device. Unless noted, these limits are over the operating free-air temperature range.

6.Unused inputs must always be connected to an appropriate logic voltage level, preferably either VCC or ground.

2

CY74FCT163500

Electrical Characteristics Over the Operating Range VCC=2.7V to 3.6V

Parameter

Description

Test Conditions

Min.

Typ.[7]

Max.

Unit

VIH

Input HIGH Voltage

All Inputs

2.0

5.5

V

VIL

Input LOW Voltage

0.8

V

VH

Input Hysteresis[8]

100

mV

VIK

Input Clamp Diode Voltage

VCC=Min., IIN=−18 mA

−0.7

−1.2

V

IIH

Input HIGH Current

VCC=Max., VI=5.5V

±1

µA

IIL

Input LOW Current

VCC=Max., VI=GND.

±1

µA

IOZH

High Impedance Output Current

VCC=Max., VOUT=5.5V

±1

µA

(Three-State Output pins)

IOZL

High Impedance Output Current

VCC=Max., VOUT=GND

±1

µA

(Three-State Output pins)

IODL

Output LOW Current[9]

VCC=3.3V, VIN=VIH

45

180

mA

or VIL, VOUT=1.5V

I

ODH

Output HIGH Current[9]

V

CC

=3.3V, V

IN

=V

IH

–45

–180

mA

or VIL, VOUT=1.5V

VOH

Output HIGH Voltage

VCC=Min., IOH= –0.1 mA

VCC–0.2

V

VCC=3.0V, IOH= –8 mA

2.4

3.0

V

VCC=3.0V, IOH= –24 mA

2.0

3.0

V

VOL

Output LOW Voltage

VCC=Min., IOL= 0.1mA

0.2

V

VCC=Min., IOL= 24 mA

0.3

0.5

I

OS

Short Circuit Current[9]

V

=Max., V

=GND

–60

–135

–240

mA

CC

OUT

IOFF

Power-Off Disable

VCC=0V, VOUT≤4.5V

±100

µA

Capacitance[8] (T = +25˚C, f = 1.0 MHz)

A

Parameter

Description

Test Conditions

Typ.[7]

Max.

Unit

CIN

Input Capacitance

VIN = 0V

4.5

6.0

pF

COUT

Output Capacitance

VOUT = 0V

5.5

8.0

pF

Notes:

7.Typical values are at VCC=3.3V, TA = +25˚C ambient.

8.This parameter is specified but not tested.

9.Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus and/or sample and hold techniques are preferable in order to minimize internal chip heating and more accurately reflect operational values. Otherwise prolonged shorting of a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parametric tests. In any sequence of parameter tests, IOS tests should be performed last.

3