1. Device Overview

️· Device Name: CPC7691
️· Type: Seems to be a hybrid device (likely a SLIC - Subscriber Loop Interface Circuit, with some switching and control features) for telephony applications.
️· Status: Preliminary (meaning the specifications are subject to change).

2. Pinout

Pin	Name	Description
1	FGND	Fault ground
2	TBAT	Tip lead to the SLIC
3	TLINE	Tip lead of the line side
4	NC	No connection
5	NC	No connection
6	TRINGING	Ringing generator return
7	VDD	+5 V supply
8	TSD	Temperature shutdown pin
9	DGND	Digital ground
10	INRINGING	Logic control input
11	LATCH	Data latch enable control input
12	RRINGING	Ringing generator source
13	NC	No connection
14	RLINE	Ring lead of the line side
15	RBAT	Ring lead to the SLIC
16	VBAT	Battery supply

3. Absolute Maximum Ratings

️· VDD (+5V supply): -0.3 to 7 V
️· Battery Supply: - to -85 V (Note: This suggests a wide voltage range for battery operation)
️· DGND to FGND Separation: -5 to +5 V
️· Logic Input Voltage: -0.3 to VDD + 0.3 V
️· Logic Input to Switch Output Isolation: - to 320V/465V (depending on switch)
️· Operating Humidity: 5% to 95%
️· Operating Temperature: -40°C to +85°C
️· Storage Temperature: -40°C to +150°C

4. Switch Specifications (SW1, SW2 - Break Switches)

️· Off-State Leakage Current: Specified for various temperatures and voltage differences between line and ground. (0.1-0.3 μA at +25°C, increasing at higher temperatures)
️· On Resistance (RON): +25°C: 14.5 Ω, +85°C: 20.5 - 28 Ω, -40°C: 10.5 Ω (Approximate)
️· Resistance Matching: ΔRON: Max 0.8Ω
️· DC Current Limit: +25°C: 300 mA, +85°C: 80-160 mA, -40°C: 400-425 mA
️· Dynamic Current Limit: (Transient): 2.5A (for a 10x1000 μs pulse)
️· Logic Input to Switch Output Isolation: Similar leakage current specifications as off-state.
️· Transient Immunity: 1500/2100 V/μs (Square wave)

Important Notes from the Document:

️· Preliminary Data: This is not a final datasheet and specifications are subject to change.
️· Conditions: Many specifications are at +25°C unless otherwise specified.
️· ESD Rating: There's a section for ESD ratings, but it isn't fully detailed in the provided excerpt.
️· Quality Control: Transient immunity is not production tested, but guaranteed by design and quality control.