PI5A4599BCEX Equivalent & Substitute Parts

Part Overview

The PI5A4599BCEX is a single-circuit SPDT (Single Pole Double Throw) analog switch IC manufactured by Diodes Incorporated in SC-70-6 surface mount package. This device functions as a 2:1 multiplexer/demultiplexer with 11Ohm on-state resistance and operates across 1.6V to 6V supply voltage range. The part is designated as Last Time Buy status, making identification of functionally equivalent alternatives essential for design continuity and long-term supply chain planning.

Key Parameters

Parameter	PI5A4599BCEX
Manufacturer	Diodes Incorporated
Switch Circuit Type	SPDT
Multiplexer Configuration	2:1
Number of Circuits	1
On-State Resistance (Max)	11Ohm
Channel-to-Channel Matching (ΔRon)	150mOhm
Supply Voltage Range (V+)	1.6V ~ 6V
Switch Time Ton/Toff (Max)	15ns / 7ns
-3dB Bandwidth	350MHz
Charge Injection	5pC
Channel Capacitance (CS(off), CD(off))	2.5pF
Current - Leakage (IS(off)) Max	100nA
Crosstalk	-82dB @ 1MHz
Operating Temperature	-40°C ~ 85°C
Package / Case	6-TSSOP, SC-88, SOT-363
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Switch Circuit Type: Must be SPDT
Multiplexer Configuration: Must be 2:1
Number of Circuits: Must be 1
Package / Case: Must be 6-TSSOP, SC-88, SOT-363 (SC-70-6)
Supply Voltage Compatibility: Substitute voltage range must encompass or overlap with 1.6V ~ 6V
On-State Resistance: Lower resistance values are acceptable; higher values require application-specific validation
Operating Temperature Range: Must support -40°C minimum; upper limit of 85°C or higher acceptable
RoHS & Compliance: Must maintain ROHS3 compliance and REACH unaffected status

Substitute parts are grouped into two categories based on on-state resistance characteristics:

Category A (Lower Resistance, 5Ohm): ADG749BKSZ-REEL, ADG749BKSZ-REEL7, ADG779BKSZ-R2, ADG779BKSZ-REEL, ADG779BKSZ-REEL7, DG2002EDL-T1-GE3

Category B (Mid-Range Resistance, 360mOhm ~ 600mOhm): ADG849YKSZ-500RL7, ADG849YKSZ-REEL, ADG849YKSZ-REEL7, ISL43L210IHZ-T

Parameter Comparison

Parameter	PI5A4599BCEX	ADG749BKSZ-REEL7	ADG779BKSZ-REEL7	ADG849YKSZ-REEL7	DG2002EDL-T1-GE3	ISL43L210IHZ-T
Manufacturer	Diodes Inc.	Analog Devices	Analog Devices	Analog Devices	Vishay Siliconix	Renesas Electronics
Switch Circuit	SPDT	SPDT	SPDT	SPDT	SPDT	SPDT
Multiplexer Config	2:1	2:1	2:1	2:1	2:1	2:1
On-State Resistance (Max)	11Ohm	5Ohm	5Ohm	600mOhm	8Ohm	360mOhm (Typ)
Supply Voltage (V+)	1.6V ~ 6V	1.8V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V	1.1V ~ 4.5V
Switch Time Ton/Toff (Max)	15ns / 7ns	7ns / 3ns (Typ)	14ns / 3ns (Typ)	15ns / 13ns	30ns / 24ns	15ns / 10ns
-3dB Bandwidth	350MHz	200MHz	200MHz	38MHz	—	—
Charge Injection	5pC	—	—	50pC	1pC	25pC
Channel Capacitance (pF)	2.5	7	7	52	7	40
Leakage Current (IS(off)) Max	100nA	250pA	10pA (Typ)	10pA (Typ)	1.5nA	30nA
Crosstalk	-82dB @ 1MHz	-82dB @ 1MHz	-82dB @ 1MHz	-64dB @ 100kHz	-77dB @ 1MHz	-70dB @ 100kHz
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C
Package	SC-70-6	SC-70-6	SC-70-6	SC-70-6	SC-70-6	SC-70-6
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	2 (1 Year)

Engineering Selection Recommendations

For Active Product Status with Extended Temperature Support: ADG749BKSZ-REEL7, ADG779BKSZ-REEL7, and ADG849YKSZ-REEL7 are all designated as Active products with inventory availability. ADG749BKSZ-REEL7 and ADG779BKSZ-REEL7 support operating temperatures to 125°C, exceeding the PI5A4599BCEX specification. All three maintain ROHS3 compliance and MSL 1 rating.

For Lowest On-State Resistance: ADG749BKSZ-REEL7 and ADG779BKSZ-REEL7 offer 5Ohm on-state resistance, significantly lower than the PI5A4599BCEX 11Ohm specification. ADG779BKSZ-REEL7 provides superior leakage current performance (10pA typical) and channel-to-channel matching (100mOhm).

For High-Frequency Applications: PI5A4599BCEX and ADG749BKSZ-REEL7 both support 350MHz and 200MHz -3dB bandwidth respectively. For applications requiring the original 350MHz bandwidth, no direct substitute maintains this specification; ADG749BKSZ-REEL7 represents the closest alternative at 200MHz.

For Minimal Charge Injection: DG2002EDL-T1-GE3 exhibits the lowest charge injection at 1pC, compared to PI5A4599BCEX at 5pC. This device maintains -40°C ~ 85°C operating range and ROHS3 compliance.

For Supply Voltage Flexibility: ISL43L210IHZ-T supports the widest lower voltage range (1.1V minimum), though its upper limit of 4.5V is below the PI5A4599BCEX 6V maximum. This device is suitable only for applications operating within 1.1V ~ 4.5V envelope.

Frequently Asked Questions (FAQ)

Q: Can ADG749BKSZ-REEL7 directly replace PI5A4599BCEX in all applications?

A: ADG749BKSZ-REEL7 is mechanically and functionally compatible (same SC-70-6 package, SPDT 2:1 configuration). However, the lower on-state resistance (5Ohm vs. 11Ohm) and reduced -3dB bandwidth (200MHz vs. 350MHz) must be evaluated against application requirements. Supply voltage range is compatible (1.8V ~ 5.5V overlaps with 1.6V ~ 6V). Applications requiring 350MHz bandwidth cannot use this substitute.

Q: What is the significance of on-state resistance differences?

A: On-state resistance determines signal attenuation and power dissipation through the switch. Lower resistance (5Ohm, 360mOhm, 600mOhm) reduces signal loss and heat generation. Higher resistance (11Ohm) in the original part may be intentional for impedance matching or current limiting. Substitutes with lower resistance are generally acceptable unless the application specifically requires higher impedance.

Q: Are all substitutes pin-compatible with PI5A4599BCEX?

A: All listed substitutes use the 6-TSSOP, SC-88, SOT-363 package designation with SC-70-6 supplier device package. Pin configuration must be verified against individual datasheets, as package designation alone does not guarantee identical pinout.

Q: Why does ISL43L210IHZ-T have MSL 2 rating instead of MSL 1?

A: ISL43L210IHZ-T carries MSL 2 (1 Year) moisture sensitivity level, requiring stricter moisture control during storage and handling compared to MSL 1 (Unlimited). This impacts shelf life and reflow processing procedures. All other substitutes maintain MSL 1 rating matching the original part.

Q: Which substitute offers the best leakage current performance?

A: ADG779BKSZ-REEL7 provides 10pA typical leakage current, substantially lower than PI5A4599BCEX at 100nA maximum. This is critical for low-power or high-impedance signal applications where leakage current introduces unacceptable noise or signal degradation.

Q: Can substitutes with 125°C operating temperature be used in -40°C ~ 85°C applications?

A: Yes. Extended temperature range (to 125°C) is a superset of the original -40°C ~ 85°C specification. ADG749BKSZ-REEL7 and ADG849YKSZ-REEL7 support 125°C operation and are fully compatible with applications limited to 85°C maximum.

Q: What is the impact of reduced -3dB bandwidth in substitute parts?

A: -3dB bandwidth defines the frequency range over which the switch maintains acceptable signal integrity. PI5A4599BCEX at 350MHz supports higher-frequency signal switching compared to ADG749BKSZ-REEL7 at 200MHz. Applications requiring signal frequencies above 200MHz must retain the original part or evaluate ADG849YKSZ variants, though these offer only 38MHz bandwidth.

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